diff --git a/Dockerfile b/Dockerfile
index 4096bad..e571489 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-ARG NGINX_VERSION=1.20.1
+ARG NGINX_VERSION=1.18.0
 ARG NGX_BROTLI_COMMIT=9aec15e2aa6feea2113119ba06460af70ab3ea62
 ARG CONFIG="\
 		--prefix=/etc/nginx \
@@ -47,7 +47,7 @@ ARG CONFIG="\
 		--add-module=/usr/src/ngx_brotli \
 	"
 
-FROM registry.odit.services/hub/library/alpine:3.14
+FROM registry.odit.services/hub/library/alpine:3.12
 LABEL maintainer="NGINX Docker Maintainers <docker-maint@nginx.com>"
 
 ARG NGINX_VERSION
@@ -132,7 +132,7 @@ RUN \
 			| xargs -r apk info --installed \
 			| sort -u > /tmp/runDeps.txt
 
-FROM registry.odit.services/hub/library/alpine:3.14
+FROM registry.odit.services/hub/library/alpine:3.12
 ARG NGINX_VERSION
 
 COPY --from=0 /tmp/runDeps.txt /tmp/runDeps.txt