diff --git a/acid-state.cabal b/acid-state.cabal
--- a/acid-state.cabal
+++ b/acid-state.cabal
@@ -7,7 +7,7 @@
 -- The package version. See the Haskell package versioning policy
 -- (http://www.haskell.org/haskellwiki/Package_versioning_policy) for
 -- standards guiding when and how versions should be incremented.
-Version:             0.7.2
+Version:             0.7.3
 
 -- A short (one-line) description of the package.
 Synopsis:            Add ACID guarantees to any serializable Haskell data structure.
diff --git a/src/Data/Acid/Local.hs b/src/Data/Acid/Local.hs
--- a/src/Data/Acid/Local.hs
+++ b/src/Data/Acid/Local.hs
@@ -148,6 +148,7 @@
          takeMVar mvar
          closeFileLog (localEvents acidState)
          closeFileLog (localCheckpoints acidState)
+         releasePrefixLock (localLock acidState)
   where acidState = downcast abstract_state