diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3fb2270a3..a958910b1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,11 +18,13 @@ jobs:
       #- run: nix build -L .#checks.x86_64-linux.aeneas-verify-lean
       - run: nix build -L .#checks.x86_64-linux.aeneas-verify-hol4
   lean: # Lean isn't supported by Nix, so we need to add extra steps
-    runs-on: [self-hosted, linux]
+    runs-on: [ubuntu-latest]
     steps:
+      # Install curl
+      - run: sudo apt update && sudo apt install curl
       # Install Elan (https://leanprover-community.github.io/install/linux.html)
       - run: curl https://raw.githubusercontent.com/leanprover/elan/master/elan-init.sh -sSf | sh
       #- run: sudo apt-get update && sudo apt-get install make
       # Verify
-      #- run: cd tests/lean && make
-      - run: cd tests/lean && lake build
+      - run: cd tests/lean && make
+      #- run: cd tests/lean && lake build