diff --git a/library/Ptr/UncheckedShifting.hs b/library/Ptr/UncheckedShifting.hs
--- a/library/Ptr/UncheckedShifting.hs
+++ b/library/Ptr/UncheckedShifting.hs
@@ -35,10 +35,6 @@
 import Foreign
 import Prelude
 
-#if MIN_VERSION_base(4,16,0)
-import qualified GHC.Exts as Exts
-#endif
-
 ------------------------------------------------------------------------
 -- Unchecked shifts
 
@@ -64,20 +60,13 @@
 #endif
 
 #if !defined(__HADDOCK__)
-shiftr_w16 (W16# w) (I# i) = W16# (
 #if MIN_VERSION_base(4,16,0)
-  Exts.uncheckedShiftRLWord16#
-#else
-  uncheckedShiftRL#
-#endif
-  w i)
-shiftr_w32 (W32# w) (I# i) = W32# (
-#if MIN_VERSION_base(4,16,0)
-  Exts.uncheckedShiftRLWord32#
+shiftr_w16 (W16# w) (I# i) = W16# (w `uncheckedShiftRLWord16#` i)
+shiftr_w32 (W32# w) (I# i) = W32# (w `uncheckedShiftRLWord32#` i)
 #else
-  uncheckedShiftRL#
+shiftr_w16 (W16# w) (I# i) = W16# (w `uncheckedShiftRL#` i)
+shiftr_w32 (W32# w) (I# i) = W32# (w `uncheckedShiftRL#` i)
 #endif
-  w i)
 
 #if WORD_SIZE_IN_BITS < 64
 shiftr_w64 (W64# w) (I# i) = W64# (w `uncheckedShiftRL64#` i)
diff --git a/ptr.cabal b/ptr.cabal
--- a/ptr.cabal
+++ b/ptr.cabal
@@ -1,5 +1,5 @@
 name: ptr
-version: 0.16.8.2
+version: 0.16.8.3
 category: Ptr, Data
 synopsis: Experimental abstractions for operations on pointers
 description:
@@ -47,7 +47,7 @@
     contravariant >=1.3 && <2,
     profunctors >=5.1 && <6,
     strict-list >=0.1.5 && <0.2,
-    text ==1.*,
+    text >=1 && <3,
     time >=1 && <2,
     vector >=0.12 && <0.13