diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -7,6 +7,11 @@
 The following is information about what major changes have gone into
 each release.
 
+Changes in 2999.18.1.1
+----------------------
+
+* Bump allowed version of QuickCheck for the test suite.
+
 Changes in 2999.18.1.0
 ----------------------
 
diff --git a/graphviz.cabal b/graphviz.cabal
--- a/graphviz.cabal
+++ b/graphviz.cabal
@@ -1,5 +1,5 @@
 Name:               graphviz
-Version:            2999.18.1.0
+Version:            2999.18.1.1
 Stability:          Beta
 Synopsis:           Bindings to Graphviz for graph visualisation.
 Description: {
@@ -127,7 +127,7 @@
                            fgl-arbitrary == 0.2.*,
                            filepath,
                            text,
-                           QuickCheck >= 2.3 && < 2.9
+                           QuickCheck >= 2.3 && < 2.10
 
         hs-Source-Dirs:    tests