diff --git a/Dockerfile b/Dockerfile
index 52deb3f..8005b95 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:1.21.3
+FROM nginx:1.21.4
 LABEL maintainer="Nicolas Duchon <nicolas.duchon@gmail.com> (@buchdag)"
 
 # Install wget and install/updates certificates
diff --git a/Dockerfile.alpine b/Dockerfile.alpine
index cf64cb7..75250f6 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:1.21.3-alpine
+FROM nginx:1.21.4-alpine
 LABEL maintainer="Nicolas Duchon <nicolas.duchon@gmail.com> (@buchdag)"
 
 # Install wget and install/updates certificates