diff --git a/Cargo.lock b/Cargo.lock
index 0aa0866057e55..10e7d6d360290 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -628,7 +628,7 @@ dependencies = [
  "fastrand 2.3.0",
  "hex",
  "http 0.2.9",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "ring",
  "time",
  "tokio",
@@ -921,7 +921,7 @@ dependencies = [
  "http 0.2.9",
  "http-body 0.4.5",
  "http-body 1.0.0",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "once_cell",
  "pin-project-lite",
  "pin-utils",
@@ -1010,7 +1010,7 @@ dependencies = [
  "http 1.1.0",
  "http-body 1.0.0",
  "http-body-util",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "itoa",
  "matchit",
@@ -1421,12 +1421,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "built"
-version = "0.7.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6a6c0b39c38fd754ac338b00a88066436389c0f029da5d37d1e01091d9b7c17"
-
 [[package]]
 name = "bumpalo"
 version = "3.12.1"
@@ -1547,19 +1541,6 @@ dependencies = [
  "serde",
 ]
 
-[[package]]
-name = "cargo_metadata"
-version = "0.14.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4acbb09d9ee8e23699b9634375c72795d095bf268439da88562cf9b501f181fa"
-dependencies = [
- "camino",
- "cargo-platform",
- "semver",
- "serde",
- "serde_json",
-]
-
 [[package]]
 name = "cargo_metadata"
 version = "0.18.1"
@@ -2675,15 +2656,6 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
-[[package]]
-name = "error-chain"
-version = "0.12.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2d2f06b9cac1506ece98fe3231e3cc9c4410ec3d5b1f24ae1c8946f0742cdefc"
-dependencies = [
- "version_check",
-]
-
 [[package]]
 name = "event-listener"
 version = "2.5.3"
@@ -2713,13 +2685,13 @@ dependencies = [
 
 [[package]]
 name = "eventsource-client"
-version = "0.11.0"
-source = "git+https://github.com/MaterializeInc/rust-eventsource-client#7a446462e9cec0da283b100258c706286e9486e5"
+version = "0.13.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "43ddc25e1ad2cc0106d5e2d967397b4fb2068a66677ee9b0eea4600e5cfe8fb4"
 dependencies = [
  "futures",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "hyper-timeout 0.4.1",
- "hyper-tls 0.5.0",
  "log",
  "pin-project",
  "rand 0.8.5",
@@ -2732,7 +2704,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9c3708c48ed7245587498d116a41566942d6d9943f5b3207fbf522e2bd0b72d0"
 dependencies = [
- "loom",
+ "loom 0.5.6",
 ]
 
 [[package]]
@@ -3026,7 +2998,20 @@ dependencies = [
  "libc",
  "log",
  "rustversion",
- "windows",
+ "windows 0.48.0",
+]
+
+[[package]]
+name = "generator"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cc6bd114ceda131d3b1d665eba35788690ad37f5916457286b32ab6fd3c438dd"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "log",
+ "rustversion",
+ "windows 0.58.0",
 ]
 
 [[package]]
@@ -3123,7 +3108,7 @@ checksum = "34e99a7734579b834a076ef11789783c153c6eb5fb3520ed15bc41f483f0f317"
 dependencies = [
  "ahash",
  "camino",
- "cargo_metadata 0.18.1",
+ "cargo_metadata",
  "cfg-if",
  "debug-ignore",
  "fixedbitset",
@@ -3417,9 +3402,9 @@ dependencies = [
 
 [[package]]
 name = "httparse"
-version = "1.8.0"
+version = "1.10.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d897f394bad6a705d5f4104762e116a75639e470d80901eed05a860a95cb1904"
+checksum = "f2d708df4e7140240a16cd6ab0ab65c972d7433ab77819ea693fde9c43811e2a"
 
 [[package]]
 name = "httpdate"
@@ -3435,9 +3420,9 @@ checksum = "9a3a5bfb195931eeb336b2a7b4d761daec841b97f947d34394601737a7bba5e4"
 
 [[package]]
 name = "hyper"
-version = "0.14.27"
+version = "0.14.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ffb1cfd654a8219eaef89881fdb3bb3b1cdc5fa75ded05d6933b2b382e395468"
+checksum = "41dfc780fdec9373c01bae43289ea34c972e40ee3c9f6b3c8801a35f35586ce7"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -3450,7 +3435,7 @@ dependencies = [
  "httpdate",
  "itoa",
  "pin-project-lite",
- "socket2 0.4.9",
+ "socket2",
  "tokio",
  "tower-service",
  "tracing",
@@ -3459,9 +3444,9 @@ dependencies = [
 
 [[package]]
 name = "hyper"
-version = "1.4.1"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "50dfd22e0e76d0f662d429a5f80fcaf3855009297eab6a0a9f8543834744ba05"
+checksum = "cc2b571658e38e0c01b1fdca3bbbe93c00d3d71693ff2770043f8c29bc7d6f80"
 dependencies = [
  "bytes",
  "futures-channel",
@@ -3485,7 +3470,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "527d4d619ca2c2aafa31ec139a3d1d60bf557bf7578a1f20f743637eccd9ca19"
 dependencies = [
  "http 1.1.0",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "linked_hash_set",
  "once_cell",
@@ -3503,7 +3488,7 @@ version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bbb958482e8c7be4bc3cf272a766a2b0bf1a6755e7a6ae777f017a31d11b13b1"
 dependencies = [
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "pin-project-lite",
  "tokio",
  "tokio-io-timeout",
@@ -3515,7 +3500,7 @@ version = "0.5.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3203a961e5c83b6f5498933e78b6b263e208c197b63e9c6c53cc82ffd3f63793"
 dependencies = [
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "pin-project-lite",
  "tokio",
@@ -3529,7 +3514,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6183ddfa99b85da61a140bea0efc93fdf56ceaa041b37d553518030827f9905"
 dependencies = [
  "bytes",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "native-tls",
  "tokio",
  "tokio-native-tls",
@@ -3543,7 +3528,7 @@ checksum = "70206fc6890eaca9fde8a0bf71caa2ddfc9fe045ac9e5c70df101a7dbde866e0"
 dependencies = [
  "bytes",
  "http-body-util",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "native-tls",
  "tokio",
@@ -3562,9 +3547,9 @@ dependencies = [
  "futures-util",
  "http 1.1.0",
  "http-body 1.0.0",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "pin-project-lite",
- "socket2 0.5.7",
+ "socket2",
  "tokio",
  "tower",
  "tower-service",
@@ -3943,7 +3928,7 @@ dependencies = [
  "http 1.1.0",
  "http-body 1.0.0",
  "http-body-util",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-openssl",
  "hyper-timeout 0.5.1",
  "hyper-util",
@@ -4026,23 +4011,23 @@ dependencies = [
 
 [[package]]
 name = "launchdarkly-server-sdk"
-version = "1.0.0"
-source = "git+https://github.com/MaterializeInc/rust-server-sdk?rev=87c0f67aa51fa936d3a6a49605e8e3f565d15281#87c0f67aa51fa936d3a6a49605e8e3f565d15281"
+version = "2.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f45bcc66f766cb4860390ef92ef9fccf167e84d57352b805f5f28e6018481a64"
 dependencies = [
- "built",
  "chrono",
  "crossbeam-channel",
  "data-encoding",
  "eventsource-client",
  "futures",
- "hyper 0.14.27",
- "hyper-tls 0.5.0",
+ "hyper 0.14.32",
  "launchdarkly-server-sdk-evaluation",
  "lazy_static",
  "log",
  "lru",
  "moka",
  "parking_lot",
+ "rand 0.8.5",
  "ring",
  "serde",
  "serde_json",
@@ -4054,9 +4039,9 @@ dependencies = [
 
 [[package]]
 name = "launchdarkly-server-sdk-evaluation"
-version = "1.0.0"
+version = "2.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c27dd31ce69c55fca526d1c22c2dcca96fd0c98e496529d37eeef6c41652173"
+checksum = "518248a3a50272432e36bc533675e50d09f97107d548a39875ade1fe1bb24910"
 dependencies = [
  "base16ct",
  "chrono",
@@ -4070,7 +4055,6 @@ dependencies = [
  "serde_json",
  "serde_with",
  "sha1",
- "urlencoding",
 ]
 
 [[package]]
@@ -4266,7 +4250,20 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ff50ecb28bb86013e935fb6683ab1f6d3a20016f123c76fd4c27470076ac30f5"
 dependencies = [
  "cfg-if",
- "generator",
+ "generator 0.7.5",
+ "scoped-tls",
+ "tracing",
+ "tracing-subscriber",
+]
+
+[[package]]
+name = "loom"
+version = "0.7.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "419e0dc8046cb947daa77eb95ae174acfbddb7673b4151f56d1eed8e93fbfaca"
+dependencies = [
+ "cfg-if",
+ "generator 0.8.4",
  "scoped-tls",
  "tracing",
  "tracing-subscriber",
@@ -4460,23 +4457,20 @@ dependencies = [
 
 [[package]]
 name = "moka"
-version = "0.9.6"
+version = "0.12.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b49a05f67020456541f4f29cbaa812016a266a86ec76f96d3873d459c68fe5e"
+checksum = "a9321642ca94a4282428e6ea4af8cc2ca4eac48ac7a6a4ea8f33f76d0ce70926"
 dependencies = [
  "crossbeam-channel",
  "crossbeam-epoch",
  "crossbeam-utils",
- "num_cpus",
- "once_cell",
+ "loom 0.7.2",
  "parking_lot",
+ "portable-atomic 1.6.0",
  "rustc_version",
- "scheduled-thread-pool",
- "skeptic",
  "smallvec",
  "tagptr",
  "thiserror",
- "triomphe",
  "uuid",
 ]
 
@@ -4516,7 +4510,7 @@ dependencies = [
  "rand 0.8.5",
  "serde",
  "serde_json",
- "socket2 0.5.7",
+ "socket2",
  "thiserror",
  "tokio",
  "tokio-native-tls",
@@ -4570,7 +4564,7 @@ dependencies = [
  "clap",
  "csv",
  "dirs",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "indicatif",
  "maplit",
  "mz-build-info",
@@ -4620,6 +4614,8 @@ dependencies = [
  "governor",
  "hex",
  "http 1.1.0",
+ "hyper 0.14.32",
+ "hyper-tls 0.5.0",
  "ipnet",
  "itertools 0.12.1",
  "launchdarkly-server-sdk",
@@ -4833,7 +4829,7 @@ dependencies = [
  "domain",
  "futures",
  "humantime",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-openssl",
  "hyper-util",
  "jsonwebtoken",
@@ -5013,7 +5009,7 @@ name = "mz-ccsr"
 version = "0.0.0"
 dependencies = [
  "anyhow",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "mz-build-tools",
  "mz-ore",
@@ -5128,7 +5124,7 @@ dependencies = [
  "clap",
  "fail",
  "futures",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-util",
  "mz-alloc",
  "mz-alloc-default",
@@ -5414,7 +5410,7 @@ dependencies = [
  "http 1.1.0",
  "http-body-util",
  "humantime",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-openssl",
  "hyper-tls 0.6.0",
  "hyper-util",
@@ -5626,7 +5622,7 @@ dependencies = [
  "serde",
  "serde_json",
  "sha2",
- "socket2 0.5.7",
+ "socket2",
  "thiserror",
  "tokio",
  "tokio-postgres",
@@ -5694,7 +5690,7 @@ dependencies = [
  "base64 0.22.0",
  "chrono",
  "clap",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "jsonwebtoken",
  "mz-frontegg-auth",
  "mz-ore",
@@ -5719,7 +5715,7 @@ dependencies = [
  "axum-extra",
  "headers",
  "http 1.1.0",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "include_dir",
  "mz-ore",
  "prometheus",
@@ -6726,7 +6722,7 @@ dependencies = [
  "openssl",
  "proxy-header",
  "scopeguard",
- "socket2 0.5.7",
+ "socket2",
  "tokio",
  "tokio-stream",
  "tracing",
@@ -8758,17 +8754,6 @@ dependencies = [
  "cc",
 ]
 
-[[package]]
-name = "pulldown-cmark"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "34f197a544b0c9ab3ae46c359a7ec9cbbb5c7bf97054266fecb7ead794a181d6"
-dependencies = [
- "bitflags 1.3.2",
- "memchr",
- "unicase",
-]
-
 [[package]]
 name = "qcell"
 version = "0.5.4"
@@ -9078,7 +9063,7 @@ dependencies = [
  "h2 0.3.26",
  "http 0.2.9",
  "http-body 0.4.5",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "hyper-tls 0.5.0",
  "ipnet",
  "js-sys",
@@ -9123,7 +9108,7 @@ dependencies = [
  "http 1.1.0",
  "http-body 1.0.0",
  "http-body-util",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-tls 0.6.0",
  "hyper-util",
  "ipnet",
@@ -9175,7 +9160,7 @@ dependencies = [
  "chrono",
  "futures",
  "http 0.2.9",
- "hyper 0.14.27",
+ "hyper 0.14.32",
  "reqwest 0.11.24",
  "reqwest-middleware",
  "retry-policies",
@@ -9382,15 +9367,6 @@ dependencies = [
  "winapi",
 ]
 
-[[package]]
-name = "scheduled-thread-pool"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "977a7519bff143a44f842fd07e80ad1329295bd71686457f18e496736f4bf9bf"
-dependencies = [
- "parking_lot",
-]
-
 [[package]]
 name = "schemars"
 version = "0.8.11"
@@ -9931,21 +9907,6 @@ dependencies = [
  "typenum",
 ]
 
-[[package]]
-name = "skeptic"
-version = "0.13.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "16d23b015676c90a0f01c197bfdc786c20342c73a0afdda9025adb0bc42940a8"
-dependencies = [
- "bytecount",
- "cargo_metadata 0.14.2",
- "error-chain",
- "glob",
- "pulldown-cmark",
- "tempfile",
- "walkdir",
-]
-
 [[package]]
 name = "slab"
 version = "0.4.9"
@@ -9970,16 +9931,6 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5e9f0ab6ef7eb7353d9119c170a436d1bf248eea575ac42d19d12f4e34130831"
 
-[[package]]
-name = "socket2"
-version = "0.4.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "64a4a911eed85daf18834cfaa86a79b7d266ff93ff5ba14005426219480ed662"
-dependencies = [
- "libc",
- "winapi",
-]
-
 [[package]]
 name = "socket2"
 version = "0.5.7"
@@ -10541,7 +10492,7 @@ dependencies = [
  "parking_lot",
  "pin-project-lite",
  "signal-hook-registry",
- "socket2 0.5.7",
+ "socket2",
  "tokio-macros",
  "tracing",
  "windows-sys 0.48.0",
@@ -10641,7 +10592,7 @@ dependencies = [
  "postgres-types",
  "rand 0.8.5",
  "serde",
- "socket2 0.5.7",
+ "socket2",
  "tokio",
  "tokio-util",
  "whoami",
@@ -10773,13 +10724,13 @@ dependencies = [
  "http 1.1.0",
  "http-body 1.0.0",
  "http-body-util",
- "hyper 1.4.1",
+ "hyper 1.6.0",
  "hyper-timeout 0.5.1",
  "hyper-util",
  "percent-encoding",
  "pin-project",
  "prost",
- "socket2 0.5.7",
+ "socket2",
  "tokio",
  "tokio-stream",
  "tower",
@@ -11008,12 +10959,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a7f741b240f1a48843f9b8e0444fb55fb2a4ff67293b50a9179dfd5ea67f8d41"
 
-[[package]]
-name = "triomphe"
-version = "0.1.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f1ee9bd9239c339d714d657fac840c6d2a4f9c45f4f9ec7b0975113458be78db"
-
 [[package]]
 name = "try-lock"
 version = "0.2.2"
@@ -11510,6 +11455,70 @@ dependencies = [
  "windows-targets 0.48.0",
 ]
 
+[[package]]
+name = "windows"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "dd04d41d93c4992d421894c18c8b43496aa748dd4c081bac0dc93eb0489272b6"
+dependencies = [
+ "windows-core",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-core"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6ba6d44ec8c2591c134257ce647b7ea6b20335bf6379a27dac5f1641fcf59f99"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-result",
+ "windows-strings",
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2bbd5b46c938e506ecbce286b6628a02171d56153ba733b6c741fc627ec9579b"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.63",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.58.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053c4c462dc91d3b1504c6fe5a726dd15e216ba718e84a0e46a88fbe5ded3515"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.63",
+]
+
+[[package]]
+name = "windows-result"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1d1043d8214f791817bab27572aaa8af63732e11bf84aa21a45a78d6c317ae0e"
+dependencies = [
+ "windows-targets 0.52.6",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cd9b125c486025df0eabcb585e62173c6c9eddcec5d117d3b6e8c30e2ee4d10"
+dependencies = [
+ "windows-result",
+ "windows-targets 0.52.6",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.42.0"
@@ -11798,8 +11807,8 @@ dependencies = [
  "getrandom 0.2.10",
  "half 2.4.1",
  "hashbrown 0.14.5",
- "hyper 0.14.27",
- "hyper 1.4.1",
+ "hyper 0.14.32",
+ "hyper 1.6.0",
  "hyper-util",
  "indexmap 1.9.1",
  "insta",
@@ -11862,7 +11871,7 @@ dependencies = [
  "sha2",
  "similar",
  "smallvec",
- "socket2 0.5.7",
+ "socket2",
  "subtle",
  "syn 1.0.107",
  "syn 2.0.63",
diff --git a/Cargo.toml b/Cargo.toml
index 74517c65d8d38..d10d7fd359146 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -306,12 +306,6 @@ serde-value = { git = "https://github.com/MaterializeInc/serde-value.git" }
 # upstream.
 tracing-opentelemetry = { git = "https://github.com/MaterializeInc/tracing-opentelemetry.git" }
 
-# Waiting on https://github.com/launchdarkly/rust-server-sdk/pull/20 to make
-# it into a release.
-# Also bumps lru to 0.12.0
-# Needs a more complex update to 2.0.0, with a custom TLS connector.
-launchdarkly-server-sdk = { git = "https://github.com/MaterializeInc/rust-server-sdk", rev = "87c0f67aa51fa936d3a6a49605e8e3f565d15281" }
-
 # Waiting on https://github.com/edenhill/librdkafka/pull/4051.
 rdkafka = { git = "https://github.com/MaterializeInc/rust-rdkafka.git" }
 rdkafka-sys = { git = "https://github.com/MaterializeInc/rust-rdkafka.git" }
diff --git a/src/adapter/Cargo.toml b/src/adapter/Cargo.toml
index c58b17196ca29..68b6300b25060 100644
--- a/src/adapter/Cargo.toml
+++ b/src/adapter/Cargo.toml
@@ -24,12 +24,12 @@ fail = { version = "0.5.1", features = ["failpoints"] }
 futures = "0.3.25"
 governor = "0.6.0"
 hex = "0.4.3"
+hyper = { version = "0.14.32", features = ["client", "http1"] }
+hyper-tls = "0.5.0"
 http = "1.1.0"
 ipnet = "2.5.0"
 itertools = "0.12.1"
-launchdarkly-server-sdk = { version = "1.0.0", default-features = false, features = [
-    "hypertls",
-] }
+launchdarkly-server-sdk = { version = "2.4.1", default-features = false }
 maplit = "1.0.2"
 mz-adapter-types = { path = "../adapter-types" }
 mz-audit-log = { path = "../audit-log" }
diff --git a/src/adapter/src/config.rs b/src/adapter/src/config.rs
index ede0b5343fdbb..025aa97280d14 100644
--- a/src/adapter/src/config.rs
+++ b/src/adapter/src/config.rs
@@ -11,8 +11,7 @@ use std::collections::BTreeMap;
 
 use mz_build_info::BuildInfo;
 use mz_ore::metric;
-use mz_ore::metrics::{MetricsRegistry, UIntGauge};
-use mz_ore::now::NowFn;
+use mz_ore::metrics::MetricsRegistry;
 use mz_sql::catalog::EnvironmentId;
 use prometheus::IntCounter;
 
@@ -35,8 +34,6 @@ pub struct SystemParameterSyncConfig {
     build_info: &'static BuildInfo,
     /// Parameter sync metrics.
     metrics: Metrics,
-    /// Function to return the current time.
-    now_fn: NowFn,
     /// The SDK key.
     ld_sdk_key: String,
     /// A map from parameter names to LaunchDarkly feature keys
@@ -51,7 +48,6 @@ impl SystemParameterSyncConfig {
         env_id: EnvironmentId,
         build_info: &'static BuildInfo,
         registry: &MetricsRegistry,
-        now_fn: NowFn,
         ld_sdk_key: String,
         ld_key_map: BTreeMap<String, String>,
     ) -> Self {
@@ -59,7 +55,6 @@ impl SystemParameterSyncConfig {
             env_id,
             build_info,
             metrics: Metrics::register_into(registry),
-            now_fn,
             ld_sdk_key,
             ld_key_map,
         }
@@ -68,22 +63,12 @@ impl SystemParameterSyncConfig {
 
 #[derive(Debug, Clone)]
 pub(super) struct Metrics {
-    pub last_cse_time_seconds: UIntGauge,
-    pub last_sse_time_seconds: UIntGauge,
     pub params_changed: IntCounter,
 }
 
 impl Metrics {
     pub(super) fn register_into(registry: &MetricsRegistry) -> Self {
         Self {
-            last_cse_time_seconds: registry.register(metric!(
-                name: "mz_parameter_frontend_last_cse_time_seconds",
-                help: "The last known time when the LaunchDarkly client sent an event to the LaunchDarkly server (as unix timestamp).",
-            )),
-            last_sse_time_seconds: registry.register(metric!(
-                name: "mz_parameter_frontend_last_sse_time_seconds",
-                help: "The last known time when the LaunchDarkly client received an event from the LaunchDarkly server (as unix timestamp).",
-            )),
             params_changed: registry.register(metric!(
                 name: "mz_parameter_frontend_params_changed",
                 help: "The number of parameter changes pulled from the LaunchDarkly frontend.",
diff --git a/src/adapter/src/config/frontend.rs b/src/adapter/src/config/frontend.rs
index 5c5f3c8dc0451..b55907b1b0928 100644
--- a/src/adapter/src/config/frontend.rs
+++ b/src/adapter/src/config/frontend.rs
@@ -8,16 +8,13 @@
 // by the Apache License, Version 2.0.
 
 use std::collections::BTreeMap;
-use std::sync::Arc;
 use std::time::Duration;
 
 use derivative::Derivative;
 use launchdarkly_server_sdk as ld;
 use mz_build_info::BuildInfo;
 use mz_cloud_provider::CloudProvider;
-use mz_ore::now::NowFn;
 use mz_sql::catalog::EnvironmentId;
-use tokio::time;
 
 use crate::config::{Metrics, SynchronizedParameters, SystemParameterSyncConfig};
 
@@ -37,8 +34,6 @@ pub struct SystemParameterFrontend {
     ld_key_map: BTreeMap<String, String>,
     /// Frontend metrics.
     ld_metrics: Metrics,
-    /// Function to return the current time.
-    now_fn: NowFn,
 }
 
 impl SystemParameterFrontend {
@@ -53,7 +48,6 @@ impl SystemParameterFrontend {
             ld_ctx: ld_ctx(&sync_config.env_id, sync_config.build_info)?,
             ld_key_map: sync_config.ld_key_map.clone(),
             ld_metrics: sync_config.metrics.clone(),
-            now_fn: sync_config.now_fn.clone(),
         })
     }
 
@@ -90,43 +84,29 @@ impl SystemParameterFrontend {
     }
 }
 
-fn ld_config(sync_config: &SystemParameterSyncConfig) -> ld::Config {
+fn ld_config(sync_config: &SystemParameterSyncConfig) -> Result<ld::Config, ld::ConfigBuildError> {
     ld::ConfigBuilder::new(&sync_config.ld_sdk_key)
-        .event_processor(ld::EventProcessorBuilder::new().on_success({
-            let last_cse_time_seconds = sync_config.metrics.last_cse_time_seconds.clone();
-            Arc::new(move |result| {
-                if let Ok(ts) = u64::try_from(result.time_from_server / 1000) {
-                    last_cse_time_seconds.set(ts);
-                } else {
-                    tracing::warn!("Cannot convert time_from_server / 1000 from u128 to u64");
-                }
-            })
-        }))
+        .event_processor(
+            ld::EventProcessorBuilder::new().https_connector(hyper_tls::HttpsConnector::new()),
+        )
+        .data_source(&ld::StreamingDataSourceBuilder::<
+            hyper_tls::HttpsConnector<hyper::client::HttpConnector>,
+        >::new())
         .build()
 }
 
 async fn ld_client(sync_config: &SystemParameterSyncConfig) -> Result<ld::Client, anyhow::Error> {
-    let ld_client = ld::Client::build(ld_config(sync_config))?;
+    let ld_client = ld::Client::build(ld_config(sync_config)?)?;
 
     tracing::info!("waiting for SystemParameterFrontend to initialize");
 
-    // Start and initialize LD client for the frontend. The callback passed
-    // will export the last time when an SSE event from the LD server was
-    // received in a Prometheus metric.
-    ld_client.start_with_default_executor_and_callback({
-        let last_sse_time_seconds = sync_config.metrics.last_sse_time_seconds.clone();
-        let now_fn = sync_config.now_fn.clone();
-        Arc::new(move |_ev| {
-            let ts = now_fn() / 1000;
-            last_sse_time_seconds.set(ts);
-        })
-    });
+    // Start and initialize LD client for the frontend.
+    ld_client.start_with_default_executor();
 
     let max_backoff = Duration::from_secs(60);
     let mut backoff = Duration::from_secs(5);
-    while !ld_client.initialized_async().await {
+    while ld_client.wait_for_initialization(backoff).await != Some(true) {
         tracing::warn!("SystemParameterFrontend failed to initialize");
-        time::sleep(backoff).await;
         backoff = (backoff * 2).min(max_backoff);
     }
 
diff --git a/src/balancerd/Cargo.toml b/src/balancerd/Cargo.toml
index d84b7c0bedd76..561cd2340690a 100644
--- a/src/balancerd/Cargo.toml
+++ b/src/balancerd/Cargo.toml
@@ -24,7 +24,7 @@ hyper = { version = "1.4.1", features = ["http1", "server"] }
 hyper-openssl = "0.10.2"
 hyper-util = "0.1.6"
 jsonwebtoken = "9.2.0"
-launchdarkly-server-sdk = { version = "1.0.0", default-features = false }
+launchdarkly-server-sdk = { version = "2.4.1", default-features = false }
 mz-alloc = { path = "../alloc" }
 mz-alloc-default = { path = "../alloc-default", optional = true }
 mz-build-info = { path = "../build-info" }
diff --git a/src/dyncfg-launchdarkly/Cargo.toml b/src/dyncfg-launchdarkly/Cargo.toml
index a3c48f0c66568..1b1aa80ccf629 100644
--- a/src/dyncfg-launchdarkly/Cargo.toml
+++ b/src/dyncfg-launchdarkly/Cargo.toml
@@ -13,9 +13,7 @@ workspace = true
 [dependencies]
 anyhow = { version = "1.0.66", features = ["backtrace"] }
 humantime = "2.1.0"
-launchdarkly-server-sdk = { version = "1.0.0", default-features = false, features = [
-  "hypertls",
-] }
+launchdarkly-server-sdk = { version = "2.4.1", default-features = false }
 mz-build-info = { path = "../build-info" }
 mz-dyncfg = { path = "../dyncfg" }
 mz-ore = { path = "../ore", default-features = false }
diff --git a/src/dyncfg-launchdarkly/src/lib.rs b/src/dyncfg-launchdarkly/src/lib.rs
index 85f5b75896914..60e7cd481c100 100644
--- a/src/dyncfg-launchdarkly/src/lib.rs
+++ b/src/dyncfg-launchdarkly/src/lib.rs
@@ -49,14 +49,13 @@ where
         let _ = dyn_into_flag(entry.val())?;
     }
     let ld_client = if let Some(key) = launchdarkly_sdk_key {
-        let client = ld::Client::build(ld::ConfigBuilder::new(key).build())?;
+        let client = ld::Client::build(ld::ConfigBuilder::new(key).build()?)?;
         client.start_with_default_executor();
         let init = async {
             let max_backoff = Duration::from_secs(60);
             let mut backoff = Duration::from_secs(5);
-            while !client.initialized_async().await {
+            while client.wait_for_initialization(backoff).await != Some(true) {
                 tracing::warn!("SyncedConfigSet failed to initialize");
-                tokio::time::sleep(backoff).await;
                 backoff = (backoff * 2).min(max_backoff);
             }
         };
diff --git a/src/environmentd/src/lib.rs b/src/environmentd/src/lib.rs
index 48197544110e4..2d554d54c2264 100644
--- a/src/environmentd/src/lib.rs
+++ b/src/environmentd/src/lib.rs
@@ -361,7 +361,6 @@ impl Listeners {
                 config.environment_id.clone(),
                 &BUILD_INFO,
                 &config.metrics_registry,
-                config.now.clone(),
                 ld_sdk_key,
                 config.launchdarkly_key_map,
             ))