diff --git a/grpc-haskell.cabal b/grpc-haskell.cabal
index 628487c..c2180e1 100644
--- a/grpc-haskell.cabal
+++ b/grpc-haskell.cabal
@@ -25,7 +25,7 @@ flag with-examples
 
 library
   build-depends:
-      base ==4.8.*
+      base >=4.8 && <5.0
     , clock >=0.6.0 && <0.8.0
     , bytestring ==0.10.*
     , stm == 2.4.*
@@ -96,7 +96,7 @@ library
 executable hellos-server
   if flag(with-examples)
     build-depends:
-        base ==4.8.*
+      base >=4.8 && <5.0
       , async
       , bytestring == 0.10.*
       , containers ==0.5.*
@@ -115,7 +115,7 @@ executable hellos-server
 executable hellos-client
   if flag(with-examples)
     build-depends:
-        base ==4.8.*
+      base >=4.8 && <5.0
       , async
       , bytestring == 0.10.*
       , containers ==0.5.*
@@ -134,7 +134,7 @@ executable hellos-client
 executable echo-server
   if flag(with-examples)
     build-depends:
-        base ==4.8.*
+      base >=4.8 && <5.0
       , async
       , bytestring == 0.10.*
       , containers ==0.5.*
@@ -152,7 +152,7 @@ executable echo-server
 executable echo-client
   if flag(with-examples)
     build-depends:
-        base ==4.8.*
+      base >=4.8 && <5.0
       , async
       , bytestring == 0.10.*
       , containers ==0.5.*
@@ -170,7 +170,7 @@ executable echo-client
 
 test-suite test
   build-depends:
-      base ==4.8.*
+      base >=4.8 && <5.0
     , grpc-haskell
     , bytestring ==0.10.*
     , unix
@@ -207,7 +207,7 @@ test-suite test
 benchmark bench
   type: exitcode-stdio-1.0
   build-depends:
-    base ==4.8.*
+      base >=4.8 && <5.0
     , grpc-haskell
     , async ==2.1.*
     , criterion ==1.1.*
diff --git a/stack.yaml b/stack.yaml
index e00abf4..1a17c67 100644
--- a/stack.yaml
+++ b/stack.yaml
@@ -2,18 +2,18 @@
 # For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/
 
 # Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
-resolver: lts-6.9
+resolver: lts-7.4
 
 # Local packages, usually specified by relative directory name
 packages:
 - '.'
 - location:
     git: git@github.mv.awakenetworks.net:awakenetworks/protobuf-wire.git
-    commit: 38b4af244934310edacd3defce5929f44c72d5c9
+    commit: 2eda7a9e33e8a2f32c3ab8c4ace338b08fb79daa
   extra-dep: true
 - location:
     git: git@github.com:awakenetworks/proto3-wire.git
-    commit: b5151914873b9ede230094e742953b5062566244
+    commit: 9875a18a422884f42be0b408fcdb0b7b4904532c
   extra-dep: true
 # Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)
 extra-deps: [managed-1.0.5]