diff --git a/.changelog/unreleased/bug-fixes/770-fix-cargo-test-no-default-features.md b/.changelog/unreleased/bug-fixes/770-fix-cargo-test-no-default-features.md
new file mode 100644
index 000000000..ab687989d
--- /dev/null
+++ b/.changelog/unreleased/bug-fixes/770-fix-cargo-test-no-default-features.md
@@ -0,0 +1,2 @@
+- Fix Cargo test failure with `--no-default-features` flag.
+  ([\#770](https://github.com/cosmos/ibc-rs/issues/770))
diff --git a/.changelog/unreleased/bug-fixes/987-serde-json-feature.md b/.changelog/unreleased/bug-fixes/987-serde-json-feature.md
index ee4eed5b0..03b70b888 100644
--- a/.changelog/unreleased/bug-fixes/987-serde-json-feature.md
+++ b/.changelog/unreleased/bug-fixes/987-serde-json-feature.md
@@ -1,3 +1,3 @@
 - Fix dependency resolution by removing the `dep:` syntax in `serde` feature of
   `ibc-app-transfer` crate.
-  ([#987](https://github.com/cosmos/ibc-rs/issues/987))
+  ([\#987](https://github.com/cosmos/ibc-rs/issues/987))
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 6f0e35cd8..d343d327b 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -135,3 +135,7 @@ jobs:
         with:
           command: test
           args: --all-features --no-fail-fast --workspace -- --nocapture
+      - uses: actions-rs/cargo@v1
+        with:
+          command: test
+          args: --no-default-features --no-fail-fast --no-run
diff --git a/ibc-testkit/src/fixtures/clients/tendermint.rs b/ibc-testkit/src/fixtures/clients/tendermint.rs
index d64fbd488..03828d78f 100644
--- a/ibc-testkit/src/fixtures/clients/tendermint.rs
+++ b/ibc-testkit/src/fixtures/clients/tendermint.rs
@@ -165,7 +165,7 @@ pub fn dummy_ics07_header() -> Header {
     }
 }
 
-#[cfg(test)]
+#[cfg(all(test, feature = "serde"))]
 mod tests {
 
     use ibc::primitives::proto::Any;
diff --git a/ibc-testkit/src/lib.rs b/ibc-testkit/src/lib.rs
index 1ae269367..b2f737471 100644
--- a/ibc-testkit/src/lib.rs
+++ b/ibc-testkit/src/lib.rs
@@ -1,5 +1,6 @@
-#![cfg_attr(not(test), deny(clippy::unwrap_used))]
 #![no_std]
+#![forbid(unsafe_code)]
+#![cfg_attr(not(test), deny(clippy::unwrap_used))]
 #![deny(
     warnings,
     trivial_casts,
@@ -8,7 +9,6 @@
     unused_qualifications,
     rust_2018_idioms
 )]
-#![forbid(unsafe_code)]
 
 extern crate alloc;
 
diff --git a/ibc-testkit/src/relayer/context.rs b/ibc-testkit/src/relayer/context.rs
index 15faa0d33..4ed1805f1 100644
--- a/ibc-testkit/src/relayer/context.rs
+++ b/ibc-testkit/src/relayer/context.rs
@@ -49,7 +49,6 @@ mod tests {
     use ibc::core::client::types::Height;
     use ibc::core::handler::types::msgs::MsgEnvelope;
     use ibc::core::host::types::identifiers::ChainId;
-    use test_log::test;
     use tracing::debug;
 
     use super::RelayerContext;
diff --git a/ibc-testkit/src/testapp/ibc/core/types.rs b/ibc-testkit/src/testapp/ibc/core/types.rs
index 40b44c34a..e8c6d2972 100644
--- a/ibc-testkit/src/testapp/ibc/core/types.rs
+++ b/ibc-testkit/src/testapp/ibc/core/types.rs
@@ -793,7 +793,6 @@ mod tests {
     use ibc::core::primitives::Signer;
     use ibc::core::router::module::Module;
     use ibc::core::router::types::module::{ModuleExtras, ModuleId};
-    use test_log::test;
 
     use super::*;
     use crate::fixtures::core::channel::PacketConfig;
diff --git a/ibc-testkit/tests/applications/mod.rs b/ibc-testkit/tests/applications/mod.rs
index 014e52f27..544cab2c5 100644
--- a/ibc-testkit/tests/applications/mod.rs
+++ b/ibc-testkit/tests/applications/mod.rs
@@ -1 +1,2 @@
+#[cfg(feature = "serde")]
 pub mod transfer;
diff --git a/ibc-testkit/tests/core/ics02_client/mod.rs b/ibc-testkit/tests/core/ics02_client/mod.rs
index acab4918d..1a11ad044 100644
--- a/ibc-testkit/tests/core/ics02_client/mod.rs
+++ b/ibc-testkit/tests/core/ics02_client/mod.rs
@@ -1,3 +1,5 @@
+#[cfg(feature = "serde")]
 pub mod create_client;
 pub mod update_client;
+#[cfg(feature = "serde")]
 pub mod upgrade_client;
diff --git a/ibc-testkit/tests/core/mod.rs b/ibc-testkit/tests/core/mod.rs
index 97dce615a..10f45250e 100644
--- a/ibc-testkit/tests/core/mod.rs
+++ b/ibc-testkit/tests/core/mod.rs
@@ -1,4 +1,5 @@
 pub mod ics02_client;
 pub mod ics03_connection;
 pub mod ics04_channel;
+#[cfg(feature = "serde")]
 pub mod router;