diff --git a/bits-extra.cabal b/bits-extra.cabal
index fca597b..25b6454 100644
--- a/bits-extra.cabal
+++ b/bits-extra.cabal
@@ -31,7 +31,6 @@ common base                       { build-depends: base                       >=
 common criterion                  { build-depends: criterion                  >= 1.3        && < 1.7    }
 common doctest                    { build-depends: doctest                    >= 0.16.2     && < 0.25   }
 common doctest-discover           { build-depends: doctest-discover           >= 0.2        && < 0.3    }
-common ghc-prim                   { build-depends: ghc-prim                   >= 0.5        && < 0.14   }
 common hedgehog                   { build-depends: hedgehog                   >= 0.5.3      && < 1.6    }
 common hspec                      { build-depends: hspec                      >= 2.4        && < 3      }
 common hw-hedgehog                { build-depends: hw-hedgehog                >= 0.1        && < 0.2    }
@@ -41,7 +40,7 @@ common vector                     { build-depends: vector                     >=
 common config
   default-language:     Haskell2010
   ghc-options:          -Wall
-  if (flag(bmi2)) && (impl(ghc >= 8.4.1))
+  if flag(bmi2)
     ghc-options:        -mbmi2 -msse4.2
     cpp-options:        -DBMI2_ENABLED
 
@@ -50,7 +49,6 @@ common bits-extra
 
 library
   import:               base, config
-                      , ghc-prim
                       , vector
   hs-source-dirs:       src
   ghc-options:          -O2
@@ -66,7 +64,6 @@ library
 
 test-suite bits-extra-test
   import:               base, config
-                      , ghc-prim
                       , hedgehog
                       , hspec
                       , hw-hedgehog
@@ -85,7 +82,6 @@ test-suite bits-extra-test
 benchmark bench
   import:               base, config
                       , criterion
-                      , ghc-prim
                       , vector
   type:                 exitcode-stdio-1.0
   main-is:              Main.hs
diff --git a/src/Data/Bits/Pdep/Prim.hs b/src/Data/Bits/Pdep/Prim.hs
index 9daab05..6c4ded6 100644
--- a/src/Data/Bits/Pdep/Prim.hs
+++ b/src/Data/Bits/Pdep/Prim.hs
@@ -19,10 +19,10 @@ module Data.Bits.Pdep.Prim
   , fastPdepEnabled
   ) where
 
-import GHC.Prim
-import GHC.Word
+import Data.Word
 
 #if MIN_VERSION_base(4,11,0) && defined(BMI2_ENABLED)
+import GHC.Exts
 #else
 import Data.Bits.Pdep.Slow
 #endif
diff --git a/src/Data/Bits/Pext/Prim.hs b/src/Data/Bits/Pext/Prim.hs
index 3d83f70..fd86ac4 100644
--- a/src/Data/Bits/Pext/Prim.hs
+++ b/src/Data/Bits/Pext/Prim.hs
@@ -19,10 +19,10 @@ module Data.Bits.Pext.Prim
   , fastPextEnabled
   ) where
 
-import GHC.Word
+import Data.Word
 
 #if MIN_VERSION_base(4,11,0) && defined(BMI2_ENABLED)
-import GHC.Prim
+import GHC.Exts
 #else
 import Data.Bits.Pext.Slow
 #endif