diff --git a/snap-core.cabal b/snap-core.cabal
index 38507f5a..ad4ee166 100644
--- a/snap-core.cabal
+++ b/snap-core.cabal
@@ -151,7 +151,7 @@ Library
     HUnit >= 1.2 && < 2,
     MonadCatchIO-transformers >= 0.2.1 && < 0.3,
     mtl == 2.0.*,
-    mwc-random >= 0.8 && <0.9,
+    mwc-random >= 0.10 && <0.11,
     old-locale,
     old-time,
     text >= 0.11 && <0.12,
diff --git a/test/snap-core-testsuite.cabal b/test/snap-core-testsuite.cabal
index 352b9af5..4efac890 100644
--- a/test/snap-core-testsuite.cabal
+++ b/test/snap-core-testsuite.cabal
@@ -39,7 +39,7 @@ Executable testsuite
     enumerator >= 0.4.13.1 && < 0.5,
     MonadCatchIO-transformers >= 0.2 && < 0.3,
     mtl >= 2 && <3,
-    mwc-random >= 0.8 && <0.9,
+    mwc-random >= 0.10 && <0.11,
     old-locale,
     old-time,
     parallel >= 3 && <4,