diff --git a/potoki-core.cabal b/potoki-core.cabal
--- a/potoki-core.cabal
+++ b/potoki-core.cabal
@@ -1,5 +1,5 @@
 name: potoki-core
-version: 2.2.6
+version: 2.2.6.1
 synopsis: Low-level components of "potoki"
 description:
   Provides everything required for building custom instances of
@@ -55,7 +55,7 @@
     primitive >=0.6.4 && <0.7,
     profunctors >=5.2 && <6,
     ptr >=0.16.2 && <0.17,
-    scanner >=0.2 && <0.3,
+    scanner >=0.3 && <0.4,
     stm >=2.4 && <3,
     text >=1 && <2,
     transformers >=0.5 && <0.6,