diff --git a/library/Potoki/Transform.hs b/library/Potoki/Transform.hs
--- a/library/Potoki/Transform.hs
+++ b/library/Potoki/Transform.hs
@@ -35,6 +35,7 @@
   -- * Concurrency
   bufferize,
   concurrently,
+  unsafeConcurrently,
   async,
   -- * File IO
   deleteFile,
diff --git a/potoki.cabal b/potoki.cabal
--- a/potoki.cabal
+++ b/potoki.cabal
@@ -1,7 +1,7 @@
 name:
   potoki
 version:
-  2.0.4
+  2.0.5
 synopsis:
   Simple streaming in IO
 description:
@@ -73,5 +73,5 @@
     Potoki.Produce
     Potoki.Transform
   build-depends:
-    potoki-core >=2.2.6 && <2.3
+    potoki-core >=2.2.7 && <2.3