diff --git a/snap-server.cabal b/snap-server.cabal
--- a/snap-server.cabal
+++ b/snap-server.cabal
@@ -1,5 +1,5 @@
 name:           snap-server
-version:        0.9.4.6
+version:        0.9.5.0
 synopsis:       A fast, iteratee-based, epoll-enabled web server for the Snap Framework
 description:
   Snap is a simple and fast web development framework and server written in
@@ -92,8 +92,8 @@
   build-depends:
     attoparsec                >= 0.10     && < 0.13,
     attoparsec-enumerator     >= 0.3      && < 0.4,
-    base                      >= 4        && < 5,
-    blaze-builder             >= 0.2.1.4  && < 0.4,
+    base                      >= 4.4      && < 5,
+    blaze-builder             >= 0.2.1.4  && < 0.5,
     blaze-builder-enumerator  >= 0.2.0    && < 0.3,
     bytestring                >= 0.9.1    && < 0.11,
     case-insensitive          >= 0.3      && < 1.3,
diff --git a/test/snap-server-testsuite.cabal b/test/snap-server-testsuite.cabal
--- a/test/snap-server-testsuite.cabal
+++ b/test/snap-server-testsuite.cabal
@@ -23,7 +23,7 @@
     base                       >= 4        && <5,
     base16-bytestring          == 0.1.*,
     binary                     >= 0.5      && <0.7,
-    blaze-builder              >= 0.2.1.4  && <0.4,
+    blaze-builder              >= 0.2.1.4  && <0.5,
     blaze-builder-enumerator   >= 0.2.0    && <0.3,
     bytestring,
     conduit                    >= 0.5      && <0.6,
@@ -94,7 +94,7 @@
     attoparsec-enumerator     >= 0.3     && <0.4,
     base                      >= 4       && <5,
     base16-bytestring         == 0.1.*,
-    blaze-builder             >= 0.2.1.4 && <0.4,
+    blaze-builder             >= 0.2.1.4 && <0.5,
     blaze-builder-enumerator  >= 0.2.0   && <0.3,
     bytestring,
     cereal                    >= 0.3     && <0.4,
@@ -160,7 +160,7 @@
     attoparsec-enumerator      >= 0.3      && <0.4,
     base                       >= 4        && <5,
     binary                     >= 0.5      && <0.7,
-    blaze-builder              >= 0.2.1.4  && <0.4,
+    blaze-builder              >= 0.2.1.4  && <0.5,
     blaze-builder-enumerator   >= 0.2.0    && <0.3,
     bytestring,
     case-insensitive           >= 0.3      && <1.3,