diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
index 914d000..36d0a01 100644
--- a/.github/workflows/nightly.yml
+++ b/.github/workflows/nightly.yml
@@ -37,7 +37,7 @@ jobs:
       # startup per iteration) cap at ~1000 to stay under ~3 min.
       PROPER_NUMTESTS: '1000'
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: erlef/setup-beam@v1
         with:
@@ -71,7 +71,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 25
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: erlef/setup-beam@v1
         with: