diff --git a/Changelog.md b/Changelog.md
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,5 +1,8 @@
 # Changelog for `proto-lens-combinators`
 
+## v0.4.0.1
+- Bump the dependency on `base` to support `ghc-8.6.1`.
+
 ## v0.4.0.0
 - Update to (and require) `proto-lens-0.4.*`.
 
diff --git a/proto-lens-combinators.cabal b/proto-lens-combinators.cabal
--- a/proto-lens-combinators.cabal
+++ b/proto-lens-combinators.cabal
@@ -2,10 +2,10 @@
 --
 -- see: https://github.com/sol/hpack
 --
--- hash: 6dee157d60bdded5f5b245b2c18c7f4cff2e4fb8a8deec8b89aa190d71b8d60c
+-- hash: af72bba1da049eb7a5a663c6419964692711ec372957c36d4702ef771b718b5b
 
 name:           proto-lens-combinators
-version:        0.4
+version:        0.4.0.1
 synopsis:       Utilities functions to proto-lens.
 description:    Useful things for working with protos.
 category:       Data
@@ -30,7 +30,7 @@
 custom-setup
   setup-depends:
       Cabal
-    , base >=4.9 && <4.12
+    , base >=4.9 && <4.13
     , proto-lens-setup ==0.4.*
 
 library
@@ -41,7 +41,7 @@
   hs-source-dirs:
       src
   build-depends:
-      base >=4.9 && <4.12
+      base >=4.9 && <4.13
     , lens-family ==1.2.*
     , proto-lens ==0.4.*
     , transformers >=0.4 && <0.6