diff --git a/Network/Wai/Test.hs b/Network/Wai/Test.hs
--- a/Network/Wai/Test.hs
+++ b/Network/Wai/Test.hs
@@ -80,6 +80,7 @@
     , queryString = []
     , requestBody = mempty
     , vault = mempty
+    , requestBodyLength = KnownLength 0
     }
 
 setRawPathInfo :: Request -> S8.ByteString -> Request
diff --git a/wai-test.cabal b/wai-test.cabal
--- a/wai-test.cabal
+++ b/wai-test.cabal
@@ -1,5 +1,5 @@
 name:            wai-test
-version:         1.3.0.2
+version:         1.3.0.3
 license:         MIT
 license-file:    LICENSE
 author:          Michael Snoyman <michael@snoyman.com>
@@ -14,7 +14,7 @@
 
 library
     build-depends:   base                      >= 4        && < 5
-                   , wai                       >= 1.3      && < 1.4
+                   , wai                       >= 1.3      && < 1.5
                    , bytestring                >= 0.9.1.4
                    , text                      >= 0.7      && < 0.12
                    , blaze-builder             >= 0.2.1.4  && < 0.4