diff --git a/Dockerfile b/Dockerfile
index faae6e2..d0e2209 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,7 @@ FROM alpine:3.19
 
 ARG ARG_NGINX_VERSION
 
-ENV NGINX_VERSION $ARG_NGINX_VERSION
+ENV NGINX_VERSION=$ARG_NGINX_VERSION
 
 # hadolint ignore=DL3018,DL3003,SC2086
 RUN CONFIG=" \
diff --git a/conf.env b/conf.env
index c7ce882..b7a9130 100644
--- a/conf.env
+++ b/conf.env
@@ -1,2 +1,2 @@
-NGINX_VERSION=1.26.1
+NGINX_VERSION=1.27.1
 DOCKER_IMAGE=dcarrillo/nginx