diff --git a/pandoc-plantuml-filter.cabal b/pandoc-plantuml-filter.cabal
index ca19824..11bbe95 100644
--- a/pandoc-plantuml-filter.cabal
+++ b/pandoc-plantuml-filter.cabal
@@ -60,7 +60,7 @@ executable pandoc-plantuml-filter
   -- other-extensions:
 
   -- Other library packages from which modules are imported.
-  build-depends:       base >=4.6 && <4.8
+  build-depends:       base >=4.6 && <5
                      , pandoc-types
                      , utf8-string
                      , SHA