diff --git a/Dockerfile b/Dockerfile
index 4574b27..d5c71bc 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,7 +36,7 @@ RUN git clone https://github.com/nginx-proxy/forego/ \
    && rm -rf /go/forego
 
 # Build the final image
-FROM nginx:1.21.5
+FROM nginx:1.21.6
 
 ARG NGINX_PROXY_VERSION
 # Add DOCKER_GEN_VERSION environment variable
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index c7f2472..2552615 100644
--- a/Dockerfile.alpine
+++ b/Dockerfile.alpine
@@ -37,7 +37,7 @@ RUN git clone https://github.com/nginx-proxy/forego/ \
    && rm -rf /go/forego
 
 # Build the final image
-FROM nginx:1.21.5-alpine
+FROM nginx:1.21.6-alpine
 
 ARG NGINX_PROXY_VERSION
 # Add DOCKER_GEN_VERSION environment variable