diff --git a/.github/workflows/push_pr.yml b/.github/workflows/push_pr.yml
index d25ac495..87d4f0de 100644
--- a/.github/workflows/push_pr.yml
+++ b/.github/workflows/push_pr.yml
@@ -30,10 +30,10 @@ jobs:
         run: curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf | sh -s -- -y --default-toolchain leanprover/lean4:4.0.0
 
       - name: Get cache
-        run: ~/.elan/bin/lake exe cache get
+        run: ~/.elan/bin/lake -Kenv=dev exe cache get || true
 
       - name: Build project
-        run: ~/.elan/bin/lake build Carleson
+        run: ~/.elan/bin/lake -Kenv=dev build Carleson
 
       - name: Build blueprint and copy to `docs/blueprint`
         uses: xu-cheng/texlive-action@v2