diff --git a/.github/workflows/openwrt-ci.yml b/.github/workflows/openwrt-ci.yml
index 004ed5ee9..869f35118 100644
--- a/.github/workflows/openwrt-ci.yml
+++ b/.github/workflows/openwrt-ci.yml
@@ -42,6 +42,20 @@ jobs:
       - name: Checkout OpenWrt
         uses: actions/checkout@v4
 
+      - name: Free Disk Space (Ubuntu)
+        uses: jlumbroso/free-disk-space@main
+        with:
+          # this might remove tools that are actually needed,
+          # if set to "true" but frees about 6 GB
+          tool-cache: true
+          # all of these default to true, but feel free to set to
+          # "false" if necessary for your workflow
+          android: true
+          dotnet: true
+          haskell: true
+          large-packages: true
+          swap-storage: true
+
       - name: Update feeds
         run: |
           sed -i 's/#src-git helloworld/src-git helloworld/g' ./feeds.conf.default