diff --git a/library/Potoki/Produce.hs b/library/Potoki/Produce.hs
--- a/library/Potoki/Produce.hs
+++ b/library/Potoki/Produce.hs
@@ -4,6 +4,7 @@
   transform,
   list,
   vector,
+  vectorWithIndices,
   hashMapRows,
   fileBytes,
   fileBytesAtOffset,
diff --git a/potoki.cabal b/potoki.cabal
--- a/potoki.cabal
+++ b/potoki.cabal
@@ -1,7 +1,7 @@
 name:
   potoki
 version:
-  2.0.14
+  2.0.15
 synopsis:
   Simple streaming in IO
 description:
@@ -73,5 +73,5 @@
     Potoki.Produce
     Potoki.Transform
   build-depends:
-    potoki-core >=2.2.15 && <2.3
+    potoki-core >=2.2.16 && <2.3