diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 892d913..617c042 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
     if: github.event_name == 'pull_request'
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
 
       - name: shellcheck
         uses: azohra/shell-linter@v0.4.0
@@ -31,7 +31,7 @@ jobs:
     if: github.event_name == 'push'
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@v3
 
       - name: Log in to dockerhub
         run: echo "${{ secrets.DOCKERHUB_TOKEN }}" | docker login -u ${{ secrets.DOCKERHUB_USERNAME }} --password-stdin
diff --git a/Dockerfile b/Dockerfile
index 75022da..fde28f9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.16
+FROM alpine:3.17
 
 ARG ARG_NGINX_VERSION
 
diff --git a/README.md b/README.md
index 83b6e28..f04cd39 100644
--- a/README.md
+++ b/README.md
@@ -28,13 +28,13 @@ Build locally:
 ./build.sh
 ```
 
-Build locally and upload to a registry (you must be logged in to the registry)
+Build locally and upload the image to a registry (you must be logged in to the registry)
 
 ```bash
 ./build.sh --push
 ```
 
-Build locally, tag image as latest and upload to a registry (you must be logged in to the registry)
+Build locally, tag the image as latest and upload it to a registry (you must be logged in to the registry)
 
 ```bash
 ./build.sh --push --latest
diff --git a/conf.env b/conf.env
index 3ce541b..891cd1b 100644
--- a/conf.env
+++ b/conf.env
@@ -1,2 +1,2 @@
-NGINX_VERSION=1.23.1
+NGINX_VERSION=1.23.3
 DOCKER_IMAGE=dcarrillo/nginx