diff --git a/library/Potoki/Consume.hs b/library/Potoki/Consume.hs
--- a/library/Potoki/Consume.hs
+++ b/library/Potoki/Consume.hs
@@ -16,6 +16,7 @@
   foldingInIO,
   execState,
   writeBytesToFile,
+  writeBytesToFileWithoutBuffering,
   appendBytesToFile,
   deleteFiles,
   printBytes,
diff --git a/library/Potoki/Transform.hs b/library/Potoki/Transform.hs
--- a/library/Potoki/Transform.hs
+++ b/library/Potoki/Transform.hs
@@ -45,6 +45,7 @@
   count,
   mapInIOWithCounter,
   handleCount,
+  handleCountOnInterval,
   traceWithCounter,
 )
 where
diff --git a/potoki.cabal b/potoki.cabal
--- a/potoki.cabal
+++ b/potoki.cabal
@@ -1,7 +1,7 @@
 name:
   potoki
 version:
-  2.0.6
+  2.0.7
 synopsis:
   Simple streaming in IO
 description:
@@ -73,5 +73,5 @@
     Potoki.Produce
     Potoki.Transform
   build-depends:
-    potoki-core >=2.2.8 && <2.3
+    potoki-core >=2.2.9 && <2.3