diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Revision history for sized-grid
 
+## 0.1.1.5 -- 2018-11-21
+
+* Reduced bound on generics-sop
+
 ## 0.1.1.5 -- 2018-11-20
 
 * Changed test suite to use QuickCheck
diff --git a/sized-grid.cabal b/sized-grid.cabal
--- a/sized-grid.cabal
+++ b/sized-grid.cabal
@@ -1,5 +1,5 @@
 name: sized-grid
-version: 0.1.1.5
+version: 0.1.1.6
 cabal-version: >=1.10
 category: Data
 build-type: Simple
@@ -41,7 +41,7 @@
         comonad >=5.0 && <5.1,
         constraints >= 0.9 && < 0.11,
         distributive >=0.5 && <1,
-        generics-sop >=0.3 && <0.4,
+        generics-sop >=0.3 && <0.5,
         lens >=4.15 && <5,
         mtl >=2.2.2 && <2.3,
         random ==1.1.*,
@@ -61,7 +61,7 @@
         HUnit >=1.6.0.0 && <1.7,
         aeson >=1.2 && <1.5,
         adjunctions >= 4.3 && < 4.5,
-        generics-sop >=0.3 && <0.4,
+        generics-sop >=0.3 && <0.5,
         lens >=4.15 && <5,
         sized-grid -any,
         tasty >=1.0 && <1.2,