diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -1,6 +1,10 @@
+0.5.0.1
+-------
+* Wider bounds for `generic-deriving` so we can build with GHC HEAD.
+
 0.5
 ---
-* Switched the Hashable1 instance to use the new, lighter, `hashable-extras`
+* Switched the `Hashable1` instance to use the new, lighter, `hashable-extras`
 
 0.4
 ---
diff --git a/log-domain.cabal b/log-domain.cabal
--- a/log-domain.cabal
+++ b/log-domain.cabal
@@ -1,6 +1,6 @@
 name:          log-domain
 category:      Numeric
-version:       0.5
+version:       0.5.0.1
 license:       BSD3
 cabal-version: >= 1.8
 license-file:  LICENSE
@@ -47,7 +47,7 @@
     comonad                   >= 3        && < 4,
     deepseq                   >= 1.3      && < 1.5,
     distributive              >= 0.3      && < 1,
-    generic-deriving          == 1.4.*,
+    generic-deriving          >= 1.4      && < 1.6,
     hashable                  >= 1.1.2.3  && < 1.3,
     hashable-extras           >= 0.1      && < 1,
     semigroupoids             >= 3.0.2    && < 4,