diff --git a/.circleci/config.yml b/.circleci/config.yml
index 36dc04302660..13dbbe55312c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -3,7 +3,7 @@ version: 2.1
 executors:
   golang:
     docker:
-      - image: circleci/golang:1.12.7
+      - image: circleci/golang:1.13
   docs:
     docker:
       - image: tendermintdev/docker-website-deployment
diff --git a/README.md b/README.md
index 6e2595af2a05..3d3e8ffd9d54 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ It is being used to build `Gaia`, the first implementation of the Cosmos Hub.
 **WARNING**: The SDK has mostly stabilized, but we are still making some
 breaking changes.
 
-**Note**: Requires [Go 1.12+](https://golang.org/dl/)
+**Note**: Requires [Go 1.13+](https://golang.org/dl/)
 
 ## Quick Start
 
diff --git a/go.mod b/go.mod
index 90d905cfebde..c953546fd566 100644
--- a/go.mod
+++ b/go.mod
@@ -10,7 +10,7 @@ require (
 	github.com/gogo/protobuf v1.2.1
 	github.com/golang/mock v1.3.1-0.20190508161146-9fa652df1129
 	github.com/gorilla/mux v1.7.0
-	github.com/gorilla/websocket v1.4.0 // indirect
+	github.com/gorilla/websocket v1.4.1 // indirect
 	github.com/mattn/go-isatty v0.0.6
 	github.com/pelletier/go-toml v1.2.0
 	github.com/pkg/errors v0.8.1
@@ -33,3 +33,5 @@ require (
 	github.com/tendermint/tm-db v0.1.1
 	gopkg.in/yaml.v2 v2.2.2
 )
+
+go 1.13
diff --git a/go.sum b/go.sum
index d4983bef4464..346be35fcac2 100644
--- a/go.sum
+++ b/go.sum
@@ -75,8 +75,8 @@ github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/
 github.com/gorilla/mux v1.7.0 h1:tOSd0UKHQd6urX6ApfOn4XdBMY6Sh1MfxV3kmaazO+U=
 github.com/gorilla/mux v1.7.0/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/gorilla/websocket v1.2.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
-github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
-github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM=
+github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE=
 github.com/hashicorp/hcl v1.0.0 h1:0Anlzjpi4vEasTeNFn2mLJgTSwt0+6sfsiTG8qcWGx4=
 github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=