diff --git a/docs/tutorials/node.md b/docs/tutorials/node.md
index 73af603b6..0c76440fd 100644
--- a/docs/tutorials/node.md
+++ b/docs/tutorials/node.md
@@ -75,7 +75,7 @@ A Dockerfile contains commands to assemble an image.
 Create a file named `tutorial/Dockerfile` with the following content:
 
 ```dockerfile
-FROM cloudron/base:0.8.1
+FROM cloudron/base:0.9.0
 
 ADD server.js /app/code/server.js
 
@@ -171,7 +171,7 @@ Login successful.
 Build scheduled with id 76cebfdd-7822-4f3d-af17-b3eb393ae604
 Downloading source
 Building
-Step 0 : FROM cloudron/base:0.8.1
+Step 0 : FROM cloudron/base:0.9.0
  ---> 97583855cc0c
 Step 1 : ADD server.js /app/code
  ---> b09b97ecdfbc
@@ -333,7 +333,7 @@ and modify our Dockerfile to look like this:
 File `tutorial/Dockerfile`
 
 ```dockerfile
-FROM cloudron/base:0.8.1
+FROM cloudron/base:0.9.0
 
 ADD server.js /app/code/server.js
 ADD package.json /app/code/package.json
diff --git a/docs/tutorials/packaging.md b/docs/tutorials/packaging.md
index b75f2f118..e6a8a7c14 100644
--- a/docs/tutorials/packaging.md
+++ b/docs/tutorials/packaging.md
@@ -79,7 +79,7 @@ console.log("Server running at port 8000");
 The Dockerfile contains instructions on how to create an image for your application.
 
 ```Dockerfile
-FROM cloudron/base:0.8.1
+FROM cloudron/base:0.9.0
 
 ADD server.js /app/code/server.js
 
@@ -188,7 +188,7 @@ Build scheduled with id e7706847-f2e3-4ba2-9638-3f334a9453a5
 Waiting for build to begin, this may take a bit...
 Downloading source
 Building
-Step 1 : FROM cloudron/base:0.8.1
+Step 1 : FROM cloudron/base:0.9.0
  ---> be9fc6312b2d
 Step 2 : ADD server.js /app/code/server.js
  ---> 10513e428d7a
diff --git a/src/apphealthmonitor.js b/src/apphealthmonitor.js
index 4149719e7..3bd361b83 100644
--- a/src/apphealthmonitor.js
+++ b/src/apphealthmonitor.js
@@ -138,7 +138,7 @@ function run() {
 
 /*
     OOM can be tested using stress tool like so:
-        docker run -ti -m 100M cloudron/base:0.8.1 /bin/bash
+        docker run -ti -m 100M cloudron/base:0.9.0 /bin/bash
         apt-get update && apt-get install stress
         stress --vm 1 --vm-bytes 200M --vm-hang 0
 */