diff --git a/servant-serf.cabal b/servant-serf.cabal
--- a/servant-serf.cabal
+++ b/servant-serf.cabal
@@ -1,7 +1,7 @@
 cabal-version: 2.0
 
 name: servant-serf
-version: 0.3.1.5
+version: 0.3.1.6
 synopsis: Automatically generate Servant API modules.
 description:
   = servant-serf
@@ -87,7 +87,7 @@
 library
   autogen-modules: Paths_servant_serf
   build-depends:
-    base >= 4.15.0 && < 4.19
+    base >= 4.15.0 && < 4.20
     , Cabal-syntax >= 3.6.0 && < 3.11
     , directory >= 1.3.6 && < 1.4
     , exceptions >= 0.10.4 && < 0.11