diff --git a/hindent.cabal b/hindent.cabal
--- a/hindent.cabal
+++ b/hindent.cabal
@@ -1,5 +1,5 @@
 name:                hindent
-version:             3.9
+version:             3.9.1
 synopsis:            Extensible Haskell pretty printer
 description:         Extensible Haskell pretty printer. Both a library and an executable.
                      .
@@ -36,7 +36,7 @@
   hs-source-dirs:    src/main
   ghc-options:       -Wall -O2
   main-is:           Main.hs
-  build-depends:     base >= 4 && < 5
+  build-depends:     base >= 4.7 && < 5
                    , hindent
                    , text
 
@@ -44,7 +44,7 @@
   type: exitcode-stdio-1.0
   hs-source-dirs: test
   main-is: Spec.hs
-  build-depends:     base >= 4 && <5
+  build-depends:     base >= 4.7 && <5
                    , hindent
                    , data-default
                    , haskell-src-exts == 1.15.*