diff --git a/vector-stream/vector-stream.cabal b/vector-stream/vector-stream.cabal
index f8606d19..13448b18 100644
--- a/vector-stream/vector-stream.cabal
+++ b/vector-stream/vector-stream.cabal
@@ -43,8 +43,8 @@ Library
   Hs-Source-Dirs:
         src
 
-  Build-Depends: base >= 4.9 && < 4.17
-               , ghc-prim >= 0.2 && < 0.9
+  Build-Depends: base >= 4.9 && < 4.18
+               , ghc-prim >= 0.2 && < 0.10
 
 source-repository head
   type:     git
diff --git a/vector/vector.cabal b/vector/vector.cabal
index 1b7f1ec4..469d363d 100644
--- a/vector/vector.cabal
+++ b/vector/vector.cabal
@@ -139,7 +139,7 @@ Library
   Install-Includes:
         vector.h
 
-  Build-Depends: base >= 4.9 && < 4.17
+  Build-Depends: base >= 4.9 && < 4.18
                , primitive >= 0.6.4.0 && < 0.8
                , deepseq >= 1.1 && < 1.5
                , vector-stream >= 0.1 && < 0.2