diff --git a/circle.yml b/circle.yml
index e2475e026..532d44050 100644
--- a/circle.yml
+++ b/circle.yml
@@ -3,8 +3,9 @@ dependencies:
     - "~/.stack"
     - ".stack-work"
   pre:
-    - curl -L https://github.com/commercialhaskell/stack/releases/download/v1.0.2/stack-1.0.2-linux-x86_64.tar.gz | tar zx -C /tmp
-    - sudo mv /tmp/stack-1.0.2-linux-x86_64/stack /usr/bin
+    - curl -L https://github.com/commercialhaskell/stack/releases/download/v1.1.2/stack-1.1.2-linux-x86_64.tar.gz | tar zx -C /tmp
+    - sudo mv /tmp/stack-1.1.2-linux-x86_64/stack /usr/bin
+    - sudo apt-get update; sudo apt-get install --only-upgrade binutils
     - createuser --superuser --no-password postgrest_test
     - createdb -O postgrest_test -U ubuntu postgrest_test
   override:
diff --git a/postgrest.cabal b/postgrest.cabal
index 698d1e9cb..fb12d086a 100644
--- a/postgrest.cabal
+++ b/postgrest.cabal
@@ -30,8 +30,9 @@ executable postgrest
     "-with-rtsopts=-N -I2"
   default-language:    Haskell2010
   build-depends:       aeson (>= 0.8 && < 0.10) || (>= 0.11 && < 0.12)
-                     , base >= 4.8 && < 5
+                     , base >= 4.8 && < 6
                      , bytestring
+                     , bytestring-tree-builder == 0.2.7
                      , case-insensitive
                      , cassava
                      , containers
@@ -39,7 +40,7 @@ executable postgrest
                      , errors
                      , hasql == 0.19.12
                      , hasql-pool == 0.4.1
-                     , hasql-transaction == 0.4.4.1
+                     , hasql-transaction == 0.4.5
                      , http-types
                      , interpolatedstring-perl6
                      , jwt
@@ -48,6 +49,7 @@ executable postgrest
                      , mtl
                      , optparse-applicative >= 0.11 && < 0.13
                      , parsec
+                     , postgresql-binary == 0.9.0.1
                      , postgrest
                      , regex-tdfa
                      , safe >= 0.3 && < 0.4
@@ -74,7 +76,7 @@ library
   default-language:    Haskell2010
   default-extensions:  OverloadedStrings, ScopedTypeVariables, QuasiQuotes
   build-depends:       aeson
-                     , base >=4.6 && <5
+                     , base
                      , bytestring
                      , case-insensitive
                      , cassava
@@ -155,7 +157,7 @@ Test-Suite spec
                      , hasql-pool
                      , hasql-transaction
                      , heredoc
-                     , hspec == 2.2.*
+                     , hspec
                      , hspec-wai
                      , hspec-wai-json
                      , http-types
diff --git a/src/PostgREST/Parsers.hs b/src/PostgREST/Parsers.hs
index cae5479b5..d563c1385 100644
--- a/src/PostgREST/Parsers.hs
+++ b/src/PostgREST/Parsers.hs
@@ -96,6 +96,7 @@ pJsonPath = (++) <$> many pJsonPathStep <*> ( (:[]) <$> (string "->>" *> pFieldN
 pField :: Parser Field
 pField = lexeme $ (,) <$> pFieldName <*> optionMaybe pJsonPath
 
+aliasSeparator :: Parser ()
 aliasSeparator = char ':' >> notFollowedBy (char ':')
 
 pSimpleSelect :: Parser SelectItem
diff --git a/stack.yaml b/stack.yaml
index a4141fed9..cfe320b1b 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -1,15 +1,24 @@
-resolver: lts-5.17
+resolver: lts-6.2
 extra-deps:
   - Ranged-sets-0.3.0
-  - bytestring-tree-builder-0.2.6
+  - bytestring-tree-builder-0.2.7
   - hasql-0.19.12
   - hasql-pool-0.4.1
-  - hasql-transaction-0.4.4.1
-  - packdeps-0.4.2.1
+  - hasql-transaction-0.4.5
+  - jwt-0.7.2
+  - postgresql-binary-0.9.0.1
+  - binary-parser-0.5.2
+  - contravariant-extras-0.3.2
+  - placeholders-0.1
   - postgresql-error-codes-1
-  - postgresql-binary-0.9
+  - success-0.2.6
+  - tuple-th-0.2.5
+  - wai-cors-0.2.5
+  - cryptohash-sha256-0.11.100.0
+  - hackage-security-0.5.2.1
+
 ghc-options:
-  postgrest: -O2 -Werror -Wall -fwarn-monomorphism-restriction -fwarn-missing-exported-sigs -fwarn-identities
+  postgrest: -O2 -Werror -Wall -fwarn-identities
 
 packages:
-- '.'
+- .