diff --git a/.circleci/Dockerfile b/.circleci/Dockerfile
index c44eac5c23d..2eff32c6fdb 100644
--- a/.circleci/Dockerfile
+++ b/.circleci/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.13.4
+FROM golang:1.14.0
 
 # Warm apt cache and install dependencies
 # bzip2 is required by the node_tests (to extract its dependencies).
@@ -9,7 +9,7 @@ RUN apt-get update && \
 
 # Install swagger-codegen
 ENV SWAGGER_CODEGEN_VERSION=2.4.8
-RUN wget http://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/${SWAGGER_CODEGEN_VERSION}/swagger-codegen-cli-${SWAGGER_CODEGEN_VERSION}.jar \
+RUN wget https://repo1.maven.org/maven2/io/swagger/swagger-codegen-cli/${SWAGGER_CODEGEN_VERSION}/swagger-codegen-cli-${SWAGGER_CODEGEN_VERSION}.jar \
     -O /usr/local/bin/swagger-codegen-cli.jar
 
 # Wrap the jar for swagger-codgen
diff --git a/.circleci/README.md b/.circleci/README.md
index c6ce14672fb..5fe0b18c863 100644
--- a/.circleci/README.md
+++ b/.circleci/README.md
@@ -7,7 +7,7 @@ Contained within is the CI test setup for the Gateway. It runs on Circle CI.
 Great, it should be as simple as thus (run from the root of the directory):
 
 ```bash
-$ docker run -v $(pwd):/go/src/github.com/grpc-ecosystem/grpc-gateway --rm jfbrandhorst/grpc-gateway-build-env:1.13 \
+$ docker run -v $(pwd):/go/src/github.com/grpc-ecosystem/grpc-gateway --rm jfbrandhorst/grpc-gateway-build-env:1.14 \
     /bin/bash -c 'cd /go/src/github.com/grpc-ecosystem/grpc-gateway && \
         make realclean && \
         make examples'
diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7dc1c25c06f..bcada21745b 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -2,14 +2,14 @@ version: 2
 jobs:
   build:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     steps:
       - checkout
       - run: go build ./...
   test:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     environment:
       GLOG_logtostderr: '1'
@@ -19,7 +19,7 @@ jobs:
       - run: bash <(curl -s https://codecov.io/bash)
   node_test:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     steps:
       - checkout
@@ -32,7 +32,7 @@ jobs:
           ./node_modules/.bin/gulp
   generate:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     steps:
       - checkout
@@ -42,7 +42,7 @@ jobs:
       - run: git diff --exit-code
   lint:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     steps:
       - checkout
@@ -84,7 +84,7 @@ jobs:
           when: always
   release:
     docker:
-      - image: jfbrandhorst/grpc-gateway-build-env:1.13
+      - image: jfbrandhorst/grpc-gateway-build-env:1.14
     working_directory: /src/grpc-gateway
     steps:
       - checkout
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index e2ff6602e2e..5fde7c282f4 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -25,7 +25,7 @@ All submissions, including submissions by project members, require review.
 Great, it should be as simple as thus (run from the root of the directory):
 
 ```bash
-docker run -v $(pwd):/src/grpc-gateway --rm jfbrandhorst/grpc-gateway-build-env:1.13 \
+docker run -v $(pwd):/src/grpc-gateway --rm jfbrandhorst/grpc-gateway-build-env:1.14 \
     /bin/bash -c 'cd /src/grpc-gateway && \
         make realclean && \
         make examples'
diff --git a/go.mod b/go.mod
index 23003a8626f..c8e880d3044 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/grpc-ecosystem/grpc-gateway
 
-go 1.13
+go 1.14
 
 require (
 	github.com/antihax/optional v0.0.0-20180407024304-ca021399b1a6