diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 38417ba..ac27d8f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -40,7 +40,7 @@ jobs:
     timeout-minutes: 60
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -118,7 +118,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -212,7 +212,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
@@ -258,7 +258,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (fast)
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup Java (temurin@17)
         id: setup-java-temurin-17
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 600805c..fe91133 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,2 +1,2 @@
 addSbtPlugin("com.github.tkawachi" % "sbt-doctest" % "0.10.0")
-addSbtPlugin("io.circe" % "sbt-circe-org" % "0.2.0")
+addSbtPlugin("io.circe" % "sbt-circe-org" % "0.2.1")