diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a528180..7207ce2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.18, 2.13.15, 3.3.1]
+        scala: [2.12.20, 2.13.15, 3.3.1]
         java: [zulu@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -91,12 +91,12 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
-      - name: Download target directories (2.12.18)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-2.12.18-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.20-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.18)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index f67f2d8..0c6e8c8 100644
--- a/build.sbt
+++ b/build.sbt
@@ -13,7 +13,7 @@ val isScala3 = Def.setting(
 )
 
 // sbt-github-actions needs configuration in `ThisBuild`
-ThisBuild / crossScalaVersions := Seq("2.12.18", "2.13.15", "3.3.1")
+ThisBuild / crossScalaVersions := Seq("2.12.20", "2.13.15", "3.3.1")
 ThisBuild / scalaVersion := crossScalaVersions.value.tail.head
 ThisBuild / githubWorkflowBuildPreamble ++= List(
   WorkflowStep.Sbt(List("mimaReportBinaryIssues"), name = Some("Check binary compatibility")),