diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 55c9e9d..d30bfd6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         submodules: true
-    - uses: iffy/install-nim@v3
+    - uses: iffy/install-nim@v4
     - name: Build
       run: nimble install -y
     - name: Test