diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b508c27..6631c18 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,7 +35,7 @@ jobs:
     timeout-minutes: 60
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -96,7 +96,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -177,7 +177,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
diff --git a/project/plugins.sbt b/project/plugins.sbt
index b25714e..c95d532 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
-val SbtTypelevel = "0.5.0"
+val SbtTypelevel = "0.5.1"
 
 addSbtPlugin("org.typelevel" % "sbt-typelevel"      % SbtTypelevel)
 addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % SbtTypelevel)