diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+#### 0.1.17.15
+
+* Use new version of `rest-core`.
+
+#### 0.1.17.14
+
+* Bump `rest-core`.
+
 #### 0.1.17.13
 
 * Bump `rest-types` and `rest-core`.
diff --git a/rest-snap.cabal b/rest-snap.cabal
--- a/rest-snap.cabal
+++ b/rest-snap.cabal
@@ -1,5 +1,5 @@
 name:                rest-snap
-version:             0.1.17.14
+version:             0.1.17.15
 description:         Rest driver for Snap.
 synopsis:            Rest driver for Snap.
 maintainer:          code@silk.co
@@ -25,7 +25,7 @@
       base == 4.*
     , bytestring >= 0.9 && < 0.11
     , case-insensitive >= 0.4 && < 1.3
-    , rest-core >= 0.31 && < 0.34
+    , rest-core == 0.34.*
     , safe >= 0.2 && < 0.4
     , snap-core == 0.9.*
     , unordered-containers == 0.2.*
diff --git a/src/Rest/Driver/Snap.hs b/src/Rest/Driver/Snap.hs
--- a/src/Rest/Driver/Snap.hs
+++ b/src/Rest/Driver/Snap.hs
@@ -36,9 +36,9 @@
   setHeader nm v     = modifyResponse (Snap.setHeader (CI.mk . UTF8.fromString $ nm) (UTF8.fromString v))
   setResponseCode cd = modifyResponse (Snap.setResponseCode cd)
 
-toRestMethod :: Snap.Method -> Rest.Method
-toRestMethod Snap.GET    = Rest.GET
-toRestMethod Snap.POST   = Rest.POST
-toRestMethod Snap.PUT    = Rest.PUT
-toRestMethod Snap.DELETE = Rest.DELETE
-toRestMethod mthd        = Rest.Unknown (show mthd)
+toRestMethod :: Snap.Method -> Maybe Rest.Method
+toRestMethod Snap.GET    = Just Rest.GET
+toRestMethod Snap.POST   = Just Rest.POST
+toRestMethod Snap.PUT    = Just Rest.PUT
+toRestMethod Snap.DELETE = Just Rest.DELETE
+toRestMethod _           = Nothing