diff --git a/Control/DeepSeq/Magic.hs b/Control/DeepSeq/Magic.hs
--- a/Control/DeepSeq/Magic.hs
+++ b/Control/DeepSeq/Magic.hs
@@ -35,7 +35,7 @@
                     go n# | n# ==# s# = ()
                           | otherwise =
                               case indexArray# ptrs# n# of
-                                (# a #) -> a `seq` go (n# +# 1#)
+                                (# a #) -> rnf a `seq` go (n# +# 1#)
                 in go 0#
 
 infixr 0 $!!
diff --git a/deepseq-magic.cabal b/deepseq-magic.cabal
--- a/deepseq-magic.cabal
+++ b/deepseq-magic.cabal
@@ -1,7 +1,7 @@
 name:                deepseq-magic
-version:             1.0.0.0
+version:             1.0.0.1
 synopsis:            Deep evaluation of data structures without NFData
--- description:         
+description:         Deep evaluation of data structures without NFData
 license:             PublicDomain
 author:              Edward Z. Yang
 maintainer:          ezyang@cs.stanford.edu