diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,3 +1,7 @@
+0.2.3.1
+-------
+* `#ifdef` bugfix
+
 0.2.3
 -----
 * GHC 7.8 compatibility
diff --git a/hyperloglog.cabal b/hyperloglog.cabal
--- a/hyperloglog.cabal
+++ b/hyperloglog.cabal
@@ -1,6 +1,6 @@
 name:          hyperloglog
 category:      Numeric
-version:       0.2.3
+version:       0.2.3.1
 license:       BSD3
 cabal-version: >= 1.8
 license-file:  LICENSE
diff --git a/src/Data/HyperLogLog/Type.hs b/src/Data/HyperLogLog/Type.hs
--- a/src/Data/HyperLogLog/Type.hs
+++ b/src/Data/HyperLogLog/Type.hs
@@ -21,7 +21,7 @@
 {-# LANGUAGE PolyKinds                 #-}
 #endif
 
-#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 706
+#if defined(__GLASGOW_HASKELL__) && __GLASGOW_HASKELL__ >= 707
 {-# LANGUAGE RoleAnnotations #-}
 #endif