diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+# 0.1.2.1
+
+- Loosens the bounds on QuickCheck to accommodate 0.12.
+
 # 0.1.2.0
 
 - Adds support for ghc 8.6.2, courtesy of @jkachmar.
diff --git a/fused-effects.cabal b/fused-effects.cabal
--- a/fused-effects.cabal
+++ b/fused-effects.cabal
@@ -1,5 +1,5 @@
 name:                fused-effects
-version:             0.1.2.0
+version:             0.1.2.1
 synopsis:            A fast, flexible, fused effect system.
 description:         A fast, flexible, fused effect system, à la Effect Handlers in Scope, Monad Transformers and Modular Algebraic Effects: What Binds Them Together, and Fusion for Free—Efficient Algebraic Effect Handlers.
 homepage:            https://github.com/robrix/fused-effects
@@ -64,7 +64,7 @@
   build-depends:       base >=4.9 && <4.13
                      , fused-effects
                      , hspec >=2.4.1
-                     , QuickCheck >= 2.7 && < 2.12
+                     , QuickCheck >= 2.7 && < 2.13
   hs-source-dirs:      examples
   default-language:    Haskell2010