Index: b/hgmp.cabal
===================================================================
--- a/hgmp.cabal
+++ b/hgmp.cabal
@@ -1,5 +1,6 @@
 name:                hgmp
 version:             0.1.2.1
+x-revision: 2
 synopsis:            Haskell interface to GMP
 description:         Types and instances, and marshalling between Integer and
                      Rational and the corresponding GMP types, along with raw
@@ -28,8 +29,8 @@ library
                      , Numeric.GMP.Types
                      , Numeric.GMP.Raw.Safe
                      , Numeric.GMP.Raw.Unsafe
-  build-depends:       base >= 4.8 && < 4.18
-                     , ghc-prim >= 0.4 && < 0.10
+  build-depends:       base >= 4.8 && < 4.20
+                     , ghc-prim >= 0.4 && < 0.12
 
   if (impl(ghc >= 8.11))
     build-depends:     ghc-bignum >= 1.0 && < 1.4
