diff --git a/core/php7.3Action/Dockerfile b/core/php7.3Action/Dockerfile
index fc536d6..e7de939 100644
--- a/core/php7.3Action/Dockerfile
+++ b/core/php7.3Action/Dockerfile
@@ -16,7 +16,7 @@
 #
 
 # build go proxy from source
-FROM golang:1.15 AS builder_source
+FROM golang:1.16 AS builder_source
 ARG GO_PROXY_GITHUB_USER=apache
 ARG GO_PROXY_GITHUB_BRANCH=master
 RUN git clone --branch ${GO_PROXY_GITHUB_BRANCH} \
@@ -25,8 +25,8 @@
    mv proxy /bin/proxy
 
 # or build it from a release
-FROM golang:1.15 AS builder_release
-ARG GO_PROXY_RELEASE_VERSION=1.15@1.17.0
+FROM golang:1.16 AS builder_release
+ARG GO_PROXY_RELEASE_VERSION=1.16@1.18.0
 RUN curl -sL \
   https://github.com/apache/openwhisk-runtime-go/archive/{$GO_PROXY_RELEASE_VERSION}.tar.gz\
   | tar xzf -\
diff --git a/core/php7.4Action/Dockerfile b/core/php7.4Action/Dockerfile
index 1c7ab63..e757a8c 100644
--- a/core/php7.4Action/Dockerfile
+++ b/core/php7.4Action/Dockerfile
@@ -16,7 +16,7 @@
 #
 
 # build go proxy from source
-FROM golang:1.15 AS builder_source
+FROM golang:1.16 AS builder_source
 ARG GO_PROXY_GITHUB_USER=apache
 ARG GO_PROXY_GITHUB_BRANCH=master
 RUN git clone --branch ${GO_PROXY_GITHUB_BRANCH} \
@@ -25,8 +25,8 @@
    mv proxy /bin/proxy
 
 # or build it from a release
-FROM golang:1.15 AS builder_release
-ARG GO_PROXY_RELEASE_VERSION=1.15@1.17.0
+FROM golang:1.16 AS builder_release
+ARG GO_PROXY_RELEASE_VERSION=1.16@1.18.0
 RUN curl -sL \
   https://github.com/apache/openwhisk-runtime-go/archive/{$GO_PROXY_RELEASE_VERSION}.tar.gz\
   | tar xzf -\
diff --git a/core/php8.0Action/Dockerfile b/core/php8.0Action/Dockerfile
index f15e9f8..726a9f0 100644
--- a/core/php8.0Action/Dockerfile
+++ b/core/php8.0Action/Dockerfile
@@ -16,7 +16,7 @@
 #
 
 # build go proxy from source
-FROM golang:1.15 AS builder_source
+FROM golang:1.16 AS builder_source
 ARG GO_PROXY_GITHUB_USER=apache
 ARG GO_PROXY_GITHUB_BRANCH=master
 RUN git clone --branch ${GO_PROXY_GITHUB_BRANCH} \
@@ -25,8 +25,8 @@
    mv proxy /bin/proxy
 
 # or build it from a release
-FROM golang:1.15 AS builder_release
-ARG GO_PROXY_RELEASE_VERSION=1.15@1.17.0
+FROM golang:1.16 AS builder_release
+ARG GO_PROXY_RELEASE_VERSION=1.16@1.18.0
 RUN curl -sL \
   https://github.com/apache/openwhisk-runtime-go/archive/{$GO_PROXY_RELEASE_VERSION}.tar.gz\
   | tar xzf -\