diff --git a/images/custom-error-pages/rootfs/Dockerfile b/images/custom-error-pages/rootfs/Dockerfile
index d6009e634..1d22dbb4c 100755
--- a/images/custom-error-pages/rootfs/Dockerfile
+++ b/images/custom-error-pages/rootfs/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.21.5-alpine:3.19 as builder
+FROM golang:1.21.5-alpine3.19 as builder
 
 RUN apk update \
     && apk upgrade && apk add git
diff --git a/images/ext-auth-example-authsvc/rootfs/Dockerfile b/images/ext-auth-example-authsvc/rootfs/Dockerfile
index 880987f82..b2ca6fb22 100644
--- a/images/ext-auth-example-authsvc/rootfs/Dockerfile
+++ b/images/ext-auth-example-authsvc/rootfs/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.5-alpine:3.19 as builder
+FROM golang:1.21.5-alpine3.19 as builder
 RUN mkdir /authsvc
 WORKDIR /authsvc
 COPY . ./
diff --git a/images/fastcgi-helloserver/rootfs/Dockerfile b/images/fastcgi-helloserver/rootfs/Dockerfile
index 31b32bd6d..8077cc900 100755
--- a/images/fastcgi-helloserver/rootfs/Dockerfile
+++ b/images/fastcgi-helloserver/rootfs/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-FROM golang:1.21.5-alpine:3.19 as builder
+FROM golang:1.21.5-alpine3.19 as builder
 
 WORKDIR /go/src/k8s.io/ingress-nginx/images/fastcgi
 
diff --git a/images/go-grpc-greeter-server/rootfs/Dockerfile b/images/go-grpc-greeter-server/rootfs/Dockerfile
index 6ee689958..0c4c9c71c 100644
--- a/images/go-grpc-greeter-server/rootfs/Dockerfile
+++ b/images/go-grpc-greeter-server/rootfs/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21.5-alpine:3.19 as build
+FROM golang:1.21.5-alpine3.19 as build
 
 WORKDIR /go/src/greeter-server
 
diff --git a/images/test-runner/rootfs/Dockerfile b/images/test-runner/rootfs/Dockerfile
index de0d3a15f..161b6caf4 100644
--- a/images/test-runner/rootfs/Dockerfile
+++ b/images/test-runner/rootfs/Dockerfile
@@ -15,7 +15,7 @@ ARG BASE_IMAGE
 ARG GOLANG_VERSION
 ARG ETCD_VERSION
 
-FROM golang:${GOLANG_VERSION}-alpine:3.19 as GO
+FROM golang:${GOLANG_VERSION}-alpine3.18 as GO
 FROM registry.k8s.io/etcd:${ETCD_VERSION} as etcd
 
 FROM ${BASE_IMAGE}