diff --git a/probabilistic/probabilistic.cabal b/probabilistic/probabilistic.cabal
index b06dd82..3b5e8aa 100644
--- a/probabilistic/probabilistic.cabal
+++ b/probabilistic/probabilistic.cabal
@@ -8,7 +8,7 @@ build-type:          Simple
 common stuff
   default-language: Haskell2010
   build-depends:
-    base >=4.14 && <4.15,
+    base >=4.12 && <5,
     containers
 
 library pag