diff --git a/.gitea/workflows/app_builder.yaml b/.gitea/workflows/app_builder.yaml
index 9309099..55cb646 100644
--- a/.gitea/workflows/app_builder.yaml
+++ b/.gitea/workflows/app_builder.yaml
@@ -67,6 +67,10 @@ jobs:
         with:
           node-version: lts/*
 
+      - name: install rust toolchain
+        if: matrix.platform == 'ubuntu-22.04'
+        uses: dtolnay/rust-toolchain@stable
+
       - name: install frontend dependencies
         run: npm ci