diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 2a23e1b..19c5fd1 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,6 +13,13 @@ jobs:
     name: Run unit tests
     runs-on: ubuntu-latest
     steps:
+      - name: Maximize build space
+        uses: easimon/maximize-build-space@master
+        with:
+          remove-dotnet: "true"
+          remove-android: "true"
+          remove-haskell: "true"
+          remove-docker-images: "true"
       - uses: denoland/setup-deno@v1
         with:
           deno-version: v1.37