diff --git a/config/version.json b/config/version.json
index 5313290..0cded57 100644
--- a/config/version.json
+++ b/config/version.json
@@ -21,6 +21,6 @@
         }
     },
     "fastlane": {
-        "version": "2.214.0"
+        "version": "2.215.1"
     }
 }
\ No newline at end of file
diff --git a/docs/readme.md b/docs/readme.md
index a421f42..55414f1 100644
--- a/docs/readme.md
+++ b/docs/readme.md
@@ -13,7 +13,7 @@ Features:
 * \[x\] Installed Flutter SDK 3.13.4
 * \[x\] Analytics disabled by default, opt-in suggested in the Docker entrypoint.
 * \[x\] Rootless user `flutter:flutter`, with permissions to run on GitLab CI.
-* \[x\] Cached Fastlane gem 2.214.0
+* \[x\] Cached Fastlane gem 2.215.1
 * \[ \] Minimal image with predownloaded SDKs and tools ready to run `flutter` commands:  
    * \[x\] Android  
    * \[ \] iOS  
@@ -115,7 +115,7 @@ The Dockerfile expects a few parameters:
 
 ```bash
 # Android
-docker build --target android --build-arg flutter_version=3.13.4 fastlane_version=2.214.0 android_build_tools_version=30.0.3 --build-arg android_platform_versions="33" -t android-test .
+docker build --target android --build-arg flutter_version=3.13.4 fastlane_version=2.215.1 android_build_tools_version=30.0.3 --build-arg android_platform_versions="33" -t android-test .
 ```
 
 ### Dockerfile stages
diff --git a/docs/src/content.mdx b/docs/src/content.mdx
index 3d95af1..68535ac 100644
--- a/docs/src/content.mdx
+++ b/docs/src/content.mdx
@@ -119,7 +119,7 @@ docker build --target android --build-arg flutter_version=${flutterVersion} fast
 
 ### Dockerfile stages
 
-The base image is `debian/debian:11-slim` and from there multiple stages are created:
+The base image is `debian/debian:12-slim` and from there multiple stages are created:
 1. `flutter` stage hast only the dependencies required to install flutter and common tools used by flutter internal commands, like `git`.
 1. `android` stage has the dependencies required to install the Android SDK and to develop Flutter apps for Android.
 1. `android-test` stage is for testing purposes. It creates a Flutter app and checks that the can be build for Android.