diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3f9cff1..b886351 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.19]
+        scala: [2.12.20]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -65,7 +65,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.19]
+        scala: [2.12.20]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -85,12 +85,12 @@ jobs:
       - name: Setup sbt
         uses: sbt/setup-sbt@v1
 
-      - name: Download target directories (2.12.19)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v4
         with:
-          name: target-${{ matrix.os }}-2.12.19-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.20-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.19)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index 8deb653..bb66765 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ ThisBuild / version := {
   val orig = (ThisBuild / version).value
   if (orig.endsWith("-SNAPSHOT")) "3.5.1-SNAPSHOT" else orig
 }
-ThisBuild / scalaVersion := "2.12.19"
+ThisBuild / scalaVersion := "2.12.20"
 
 // sbt-github-actions
 ThisBuild / githubWorkflowBuild := Seq(