diff --git a/fs-repo-11-to-12/go.mod b/fs-repo-11-to-12/go.mod
index a0fbc7a9..6a666f19 100644
--- a/fs-repo-11-to-12/go.mod
+++ b/fs-repo-11-to-12/go.mod
@@ -7,6 +7,7 @@ require (
 	github.com/ipfs/fs-repo-migrations/tools v0.0.0-20211209222258-754a2dcb82ea
 	github.com/ipfs/go-cid v0.0.7
 	github.com/ipfs/go-datastore v0.4.5
+	github.com/ipfs/go-ds-badger v0.2.7-0.20211210151007-a2805355dcf5 // indirect
 	github.com/ipfs/go-filestore v1.0.0
 	github.com/ipfs/go-ipfs v0.8.0
 	github.com/ipfs/go-ipfs-ds-help v1.0.0
diff --git a/fs-repo-11-to-12/go.sum b/fs-repo-11-to-12/go.sum
index 3940aa3a..a71c85a3 100644
--- a/fs-repo-11-to-12/go.sum
+++ b/fs-repo-11-to-12/go.sum
@@ -294,8 +294,9 @@ github.com/ipfs/go-ds-badger v0.0.5/go.mod h1:g5AuuCGmr7efyzQhLL8MzwqcauPojGPUaH
 github.com/ipfs/go-ds-badger v0.0.7/go.mod h1:qt0/fWzZDoPW6jpQeqUjR5kBfhDNB65jd9YlmAvpQBk=
 github.com/ipfs/go-ds-badger v0.2.1/go.mod h1:Tx7l3aTph3FMFrRS838dcSJh+jjA7cX9DrGVwx/NOwE=
 github.com/ipfs/go-ds-badger v0.2.3/go.mod h1:pEYw0rgg3FIrywKKnL+Snr+w/LjJZVMTBRn4FS6UHUk=
-github.com/ipfs/go-ds-badger v0.2.6 h1:Hy8jw4rifxtRDrqpvC1yh36oIyE37KDzsUzlHUPOFiU=
 github.com/ipfs/go-ds-badger v0.2.6/go.mod h1:02rnztVKA4aZwDuaRPTf8mpqcKmXP7mLl6JPxd14JHA=
+github.com/ipfs/go-ds-badger v0.2.7-0.20211210151007-a2805355dcf5 h1:ovdpQk2ZVK6eQLzMCZy1z2tJae7yvE8xaPUw4Pr1RqI=
+github.com/ipfs/go-ds-badger v0.2.7-0.20211210151007-a2805355dcf5/go.mod h1:02rnztVKA4aZwDuaRPTf8mpqcKmXP7mLl6JPxd14JHA=
 github.com/ipfs/go-ds-flatfs v0.4.5 h1:4QceuKEbH+HVZ2ZommstJMi3o3II+dWS3IhLaD7IGHs=
 github.com/ipfs/go-ds-flatfs v0.4.5/go.mod h1:e4TesLyZoA8k1gV/yCuBTnt2PJtypn4XUlB5n8KQMZY=
 github.com/ipfs/go-ds-leveldb v0.0.1/go.mod h1:feO8V3kubwsEF22n0YRQCffeb79OOYIykR4L04tMOYc=
diff --git a/fs-repo-11-to-12/migration/swapper.go b/fs-repo-11-to-12/migration/swapper.go
index a41630df..df029ec9 100644
--- a/fs-repo-11-to-12/migration/swapper.go
+++ b/fs-repo-11-to-12/migration/swapper.go
@@ -67,12 +67,7 @@ func (cswap *CidSwapper) Revert(unswapCh <-chan Swap) (uint64, error) {
 	swapWorkerFunc := func() (uint64, uint64) {
 		return cswap.unswapWorker(unswapCh)
 	}
-	// We only run 1 worker for revert. Migrations
-	// many-cid-to-one-multihash mappings, but reverts can have the
-	// opposite. The unswapWorker keeps a cache to handle that, but
-	// this only works with a single worker. Otherwise we'd need
-	// complex syncing, or delayed removal (increased datastore size).
-	return cswap.runWorkers(1, swapWorkerFunc)
+	return cswap.runWorkers(NWorkers, swapWorkerFunc)
 }
 
 // Run workers launches several workers to run the given function which returns
diff --git a/fs-repo-11-to-12/vendor/github.com/ipfs/go-ds-badger/datastore.go b/fs-repo-11-to-12/vendor/github.com/ipfs/go-ds-badger/datastore.go
index b2c2e7fa..34780b4f 100644
--- a/fs-repo-11-to-12/vendor/github.com/ipfs/go-ds-badger/datastore.go
+++ b/fs-repo-11-to-12/vendor/github.com/ipfs/go-ds-badger/datastore.go
@@ -88,7 +88,7 @@ var DefaultOptions Options
 func init() {
 	DefaultOptions = Options{
 		GcDiscardRatio: 0.2,
-		GcInterval:     15 * time.Minute,
+		GcInterval:     2 * time.Minute,
 		GcSleep:        10 * time.Second,
 		Options:        badger.LSMOnlyOptions(""),
 	}
diff --git a/fs-repo-11-to-12/vendor/modules.txt b/fs-repo-11-to-12/vendor/modules.txt
index 7a8443f8..d4b3b274 100644
--- a/fs-repo-11-to-12/vendor/modules.txt
+++ b/fs-repo-11-to-12/vendor/modules.txt
@@ -123,7 +123,8 @@ github.com/ipfs/go-datastore/mount
 github.com/ipfs/go-datastore/namespace
 github.com/ipfs/go-datastore/query
 github.com/ipfs/go-datastore/sync
-# github.com/ipfs/go-ds-badger v0.2.6
+# github.com/ipfs/go-ds-badger v0.2.7-0.20211210151007-a2805355dcf5
+## explicit
 github.com/ipfs/go-ds-badger
 # github.com/ipfs/go-ds-flatfs v0.4.5
 github.com/ipfs/go-ds-flatfs