diff --git a/.travis.yml b/.travis.yml
index 6d54a6ce..4492891b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -70,8 +70,9 @@ install:
   - "if [ $HCNUMVER -ge 70800 ]; then sed -i.bak 's/-- ghc-options:.*/ghc-options: -j2/' ${HOME}/.cabal/config; fi"
   - grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
   - "printf 'packages: \"servant\" \"servant-client\" \"servant-client-core\" \"servant-docs\" \"servant-foreign\" \"servant-server\" \"doc/tutorial\" \"servant-machines\" \"servant-conduit\" \"servant-pipes\" \"doc/cookbook/basic-auth\" \"doc/cookbook/curl-mock\" \"doc/cookbook/basic-streaming\" \"doc/cookbook/db-postgres-pool\" \"doc/cookbook/db-sqlite-simple\" \"doc/cookbook/file-upload\" \"doc/cookbook/generic\" \"doc/cookbook/hoist-server-with-context\" \"doc/cookbook/https\" \"doc/cookbook/jwt-and-basic-auth\" \"doc/cookbook/sentry\" \"doc/cookbook/testing\" \"doc/cookbook/structuring-apis\" \"doc/cookbook/using-custom-monad\" \"doc/cookbook/using-free-client\"\\n' > cabal.project"
+  - "printf 'write-ghc-environment-files: always\\n' >> cabal.project"
   - "echo 'constraints: foundation >=0.0.14,memory <0.14.12 || >0.14.12' >> cabal.project"
-  - "echo 'allow-newer: servant-js:base, servant-pagination:servant, servant-pagination:servant-server,servant-multipart:servant, servant-multipart:servant-server,servant-quickcheck:servant, servant-quickcheck:servant-client, servant-quickcheck:servant-server,servant-auth-server:servant, servant-auth-server:servant-server, servant-auth-server:http-api-data,servant-js:servant, servant-js:servant-foreign,servant-quickcheck:hspec' >> cabal.project"
+  - "echo 'allow-newer: servant-js:base, servant-pagination:servant, servant-pagination:servant-server,servant-multipart:servant, servant-multipart:servant-server,servant-quickcheck:servant, servant-quickcheck:servant-client, servant-quickcheck:servant-server,servant-auth-server:servant, servant-auth-server:servant-server, servant-auth-server:http-api-data,servant-js:servant, servant-js:servant-foreign,servant-quickcheck:hspec,servant-quickcheck:http-client' >> cabal.project"
   - touch cabal.project.local
   - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- servant | grep -vw -- servant-client | grep -vw -- servant-client-core | grep -vw -- servant-docs | grep -vw -- servant-foreign | grep -vw -- servant-server | grep -vw -- tutorial | grep -vw -- servant-machines | grep -vw -- servant-conduit | grep -vw -- servant-pipes | grep -vw -- cookbook-basic-auth | grep -vw -- cookbook-curl-mock | grep -vw -- cookbook-basic-streaming | grep -vw -- cookbook-db-postgres-pool | grep -vw -- cookbook-db-sqlite-simple | grep -vw -- cookbook-file-upload | grep -vw -- cookbook-generic | grep -vw -- cookbook-hoist-server-with-context | grep -vw -- cookbook-https | grep -vw -- cookbook-jwt-and-basic-auth | grep -vw -- cookbook-sentry | grep -vw -- cookbook-testing | grep -vw -- cookbook-structuring-apis | grep -vw -- cookbook-using-custom-monad | grep -vw -- cookbook-using-free-client | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
@@ -167,8 +168,9 @@ script:
   - cd ${DISTDIR} || false
   - find . -maxdepth 1 -name '*.tar.gz' -exec tar -xvf '{}' \;
   - "printf 'packages: servant-*/*.cabal servant-client-*/*.cabal servant-client-core-*/*.cabal servant-docs-*/*.cabal servant-foreign-*/*.cabal servant-server-*/*.cabal tutorial-*/*.cabal servant-machines-*/*.cabal servant-conduit-*/*.cabal servant-pipes-*/*.cabal cookbook-basic-auth-*/*.cabal cookbook-curl-mock-*/*.cabal cookbook-basic-streaming-*/*.cabal cookbook-db-postgres-pool-*/*.cabal cookbook-db-sqlite-simple-*/*.cabal cookbook-file-upload-*/*.cabal cookbook-generic-*/*.cabal cookbook-hoist-server-with-context-*/*.cabal cookbook-https-*/*.cabal cookbook-jwt-and-basic-auth-*/*.cabal cookbook-sentry-*/*.cabal cookbook-testing-*/*.cabal cookbook-structuring-apis-*/*.cabal cookbook-using-custom-monad-*/*.cabal cookbook-using-free-client-*/*.cabal\\n' > cabal.project"
+  - "printf 'write-ghc-environment-files: always\\n' >> cabal.project"
   - "echo 'constraints: foundation >=0.0.14,memory <0.14.12 || >0.14.12' >> cabal.project"
-  - "echo 'allow-newer: servant-js:base, servant-pagination:servant, servant-pagination:servant-server,servant-multipart:servant, servant-multipart:servant-server,servant-quickcheck:servant, servant-quickcheck:servant-client, servant-quickcheck:servant-server,servant-auth-server:servant, servant-auth-server:servant-server, servant-auth-server:http-api-data,servant-js:servant, servant-js:servant-foreign,servant-quickcheck:hspec' >> cabal.project"
+  - "echo 'allow-newer: servant-js:base, servant-pagination:servant, servant-pagination:servant-server,servant-multipart:servant, servant-multipart:servant-server,servant-quickcheck:servant, servant-quickcheck:servant-client, servant-quickcheck:servant-server,servant-auth-server:servant, servant-auth-server:servant-server, servant-auth-server:http-api-data,servant-js:servant, servant-js:servant-foreign,servant-quickcheck:hspec,servant-quickcheck:http-client' >> cabal.project"
   - touch cabal.project.local
   - "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg  | grep -vw -- servant | grep -vw -- servant-client | grep -vw -- servant-client-core | grep -vw -- servant-docs | grep -vw -- servant-foreign | grep -vw -- servant-server | grep -vw -- tutorial | grep -vw -- servant-machines | grep -vw -- servant-conduit | grep -vw -- servant-pipes | grep -vw -- cookbook-basic-auth | grep -vw -- cookbook-curl-mock | grep -vw -- cookbook-basic-streaming | grep -vw -- cookbook-db-postgres-pool | grep -vw -- cookbook-db-sqlite-simple | grep -vw -- cookbook-file-upload | grep -vw -- cookbook-generic | grep -vw -- cookbook-hoist-server-with-context | grep -vw -- cookbook-https | grep -vw -- cookbook-jwt-and-basic-auth | grep -vw -- cookbook-sentry | grep -vw -- cookbook-testing | grep -vw -- cookbook-structuring-apis | grep -vw -- cookbook-using-custom-monad | grep -vw -- cookbook-using-free-client | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
   - cat cabal.project || true
diff --git a/cabal.project b/cabal.project
index a1f81d2d..fa658be1 100644
--- a/cabal.project
+++ b/cabal.project
@@ -43,4 +43,6 @@ allow-newer:
   servant-quickcheck:servant, servant-quickcheck:servant-client, servant-quickcheck:servant-server,
   servant-auth-server:servant, servant-auth-server:servant-server, servant-auth-server:http-api-data,
   servant-js:servant, servant-js:servant-foreign,
-  servant-quickcheck:hspec
+  servant-quickcheck:hspec,
+
+  servant-quickcheck:http-client
diff --git a/servant-client/servant-client.cabal b/servant-client/servant-client.cabal
index 647a40a9..c6509133 100644
--- a/servant-client/servant-client.cabal
+++ b/servant-client/servant-client.cabal
@@ -1,6 +1,7 @@
 cabal-version:       >=1.10
 name:                servant-client
 version:             0.15
+x-revision:          1
 
 synopsis:            Automatic derivation of querying functions for servant
 category:            Servant, Web
@@ -64,7 +65,7 @@ library
   -- Here can be exceptions if we really need features from the newer versions.
   build-depends:
       base-compat           >= 0.10.5   && < 0.11
-    , http-client           >= 0.5.13.1 && < 0.6
+    , http-client           >= 0.5.13.1 && < 0.7
     , http-media            >= 0.7.1.3  && < 0.8
     , http-types            >= 0.12.2   && < 0.13
     , exceptions            >= 0.10.0   && < 0.11