diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 Changelog for tmp-postgres
 
+1.31.0.3
+  #233 Add missing NOINLINE for global lock
+
 1.31.0.2
   #230 Fix bug when the same cache is built concurrently.
 
diff --git a/benchmark/Main.hs b/benchmark/Main.hs
--- a/benchmark/Main.hs
+++ b/benchmark/Main.hs
@@ -114,31 +114,15 @@
   , setupWithCache $ \theCacheConfig -> bench "withConfig silent cache" $ whnfIO $
       withConfig theCacheConfig $ const $ pure ()
 
-  , bench "with migrate 10x" $ whnfIO $ replicateM 10 $ withConfig defaultConfig $ \db ->
-      migrateDb db >> testQuery db
-{-
-  , setupWithCache $ \theCacheConfig -> do
-      bench "with migrate 10x and cache" $ whnfIO $ withConfig theCacheConfig $ \_ -> do
-        replicateM_ 10 $ withConfig theCacheConfig $ \db ->
-          migrateDb db >> testQuery db
-
-  , setupWithCache $ \theCacheConfig -> bench "withSnapshot migrate 10x and cache" $ whnfIO $ withConfig theCacheConfig $ \db -> do
-      migrateDb db
-      void $ withSnapshot db $ \theSnapshotDir -> do
-        let theSnapshotConfig = defaultConfig <> snapshotConfig theSnapshotDir
-        replicateM_ 10 $ withConfig theSnapshotConfig testQuery
-
-  , setupWithCache $ \theCacheConfig -> bench "cache action and recache and cache" $ whnfIO $ withTempDirectory "/tmp" "tmp-postgres-bench-cache" $ \snapshotDir -> do
+ , setupWithCache $ \theCacheConfig -> bench "cache action and recache and cache" $ whnfIO $ withTempDirectory "/tmp" "tmp-postgres-bench-cache" $ \snapshotDir -> do
       newConfig <- either throwIO pure =<< cacheAction snapshotDir migrateDb theCacheConfig
-      replicateM_ 10 $
-        either throwIO pure =<< flip withConfig testQuery
-          =<< either throwIO pure =<< cacheAction snapshotDir migrateDb newConfig
+      either throwIO pure =<< flip withConfig testQuery
+        =<< either throwIO pure =<< cacheAction snapshotDir migrateDb newConfig
 
   , setupWithCacheAndAction $ \snapshotDir theCacheConfig -> bench "pre-cache action and recache" $ whnfIO $ do
-      replicateM_ 10 $
-        either throwIO pure =<< flip withConfig testQuery
-          =<< either throwIO pure =<< cacheAction snapshotDir migrateDb theCacheConfig
--}
+      either throwIO pure =<< flip withConfig testQuery
+        =<< either throwIO pure =<< cacheAction snapshotDir migrateDb theCacheConfig
+
   , setupWithCacheAndSP $ \theConfig -> bench "withConfig pre-setup with withSnapshot" $ whnfIO $
       void $ withConfig theConfig $ const $ pure ()
 
diff --git a/src/Database/Postgres/Temp/Internal.hs b/src/Database/Postgres/Temp/Internal.hs
--- a/src/Database/Postgres/Temp/Internal.hs
+++ b/src/Database/Postgres/Temp/Internal.hs
@@ -664,6 +664,7 @@
 -------------------------------------------------------------------------------
 cacheLock :: MVar ()
 cacheLock = unsafePerformIO $ newMVar ()
+{-# NOINLINE cacheLock #-}
 
 {-|
 Check to see if a cached data directory exists.
diff --git a/tmp-postgres.cabal b/tmp-postgres.cabal
--- a/tmp-postgres.cabal
+++ b/tmp-postgres.cabal
@@ -1,5 +1,5 @@
 name:                tmp-postgres
-version:             1.31.0.2
+version:             1.31.0.3
 synopsis: Start and stop a temporary postgres
 description: Start and stop a temporary postgres. See README.md
 homepage:            https://github.com/jfischoff/tmp-postgres#readme