diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aa74e85..1a436d5 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@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -45,7 +45,7 @@ jobs:
       - name: Setup Java (temurin@8)
         id: setup-java-temurin-8
         if: matrix.java == 'temurin@8'
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: 8
@@ -83,7 +83,7 @@ jobs:
 
       - name: Upload target directories
         if: github.event_name != 'pull_request' && (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/main')
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: target-${{ matrix.os }}-${{ matrix.java }}-${{ matrix.scala }}-${{ matrix.project }}
           path: targets.tar
@@ -99,7 +99,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -109,7 +109,7 @@ jobs:
       - name: Setup Java (temurin@8)
         id: setup-java-temurin-8
         if: matrix.java == 'temurin@8'
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: 8
@@ -120,7 +120,7 @@ jobs:
         run: sbt +update
 
       - name: Download target directories (2.13, rootJVM)
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: target-${{ matrix.os }}-${{ matrix.java }}-2.13-rootJVM
 
@@ -130,7 +130,7 @@ jobs:
           rm targets.tar
 
       - name: Download target directories (3, rootJVM)
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: target-${{ matrix.os }}-${{ matrix.java }}-3-rootJVM
 
@@ -173,7 +173,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -183,7 +183,7 @@ jobs:
       - name: Setup Java (temurin@8)
         id: setup-java-temurin-8
         if: matrix.java == 'temurin@8'
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: 8
@@ -208,7 +208,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout current branch (full)
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
@@ -218,7 +218,7 @@ jobs:
       - name: Setup Java (temurin@8)
         id: setup-java-temurin-8
         if: matrix.java == 'temurin@8'
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: 8
@@ -231,7 +231,7 @@ jobs:
       - name: Setup Java (temurin@11)
         id: setup-java-temurin-11
         if: matrix.java == 'temurin@11'
-        uses: actions/setup-java@v4
+        uses: actions/setup-java@v5
         with:
           distribution: temurin
           java-version: 11
diff --git a/build.sbt b/build.sbt
index 9f2d161..02e5a5b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -14,7 +14,7 @@ ThisBuild / developers := List(
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.16"
+val Scala213 = "2.13.18"
 ThisBuild / crossScalaVersions := Seq(Scala213, "3.3.8")
 ThisBuild / scalaVersion := Scala213 // the default Scala
 
@@ -40,7 +40,7 @@ lazy val core = crossProject(JVMPlatform)
     name := "catapult",
     libraryDependencies ++= Seq(
       "org.typelevel" %%% "cats-core" % "2.13.0",
-      "org.typelevel" %%% "cats-effect" % "3.6.4",
+      "org.typelevel" %%% "cats-effect" % "3.7.1",
       "co.fs2" %%% "fs2-core" % "3.12.2",
       "com.launchdarkly" % "launchdarkly-java-server-sdk" % "7.17.2",
     ),
@@ -52,7 +52,7 @@ lazy val mtl = crossProject(JVMPlatform)
   .settings(
     name := "catapult-mtl",
     libraryDependencies ++= Seq(
-      "org.typelevel" %% "cats-mtl" % "1.5.0"
+      "org.typelevel" %% "cats-mtl" % "1.7.0"
     ),
     tlVersionIntroduced := Map(
       "2.13" -> "0.5.1",
@@ -67,8 +67,8 @@ lazy val circe = crossProject(JVMPlatform)
   .settings(
     name := "catapult-circe",
     libraryDependencies ++= Seq(
-      "io.circe" %% "circe-core" % "0.14.14",
-      "io.circe" %% "circe-parser" % "0.14.14",
+      "io.circe" %% "circe-core" % "0.14.17",
+      "io.circe" %% "circe-parser" % "0.14.17",
       "org.scalameta" %% "munit-scalacheck" % "1.3.1" % Test,
     ),
     tlVersionIntroduced := Map(
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 2fac4ac..54222d1 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,4 +1,4 @@
-addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.8.0")
-addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.8.0")
+addSbtPlugin("org.typelevel" % "sbt-typelevel" % "0.8.7")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.8.7")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.22.0")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.5.12")