diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a72cc6..7638e37 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -27,7 +27,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.15]
+        scala: [2.12.20]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -76,7 +76,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.15]
+        scala: [2.12.20]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -104,12 +104,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.15)
+      - name: Download target directories (2.12.20)
         uses: actions/download-artifact@v2
         with:
-          name: target-${{ matrix.os }}-2.12.15-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.20-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.15)
+      - name: Inflate target directories (2.12.20)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index f8e023b..738f2fb 100644
--- a/build.sbt
+++ b/build.sbt
@@ -16,7 +16,7 @@ inThisBuild(
       "SONATYPE_PASSWORD" -> s"$${{ secrets.SONATYPE_PASSWORD }}",
       "SONATYPE_USERNAME" -> s"$${{ secrets.SONATYPE_USERNAME }}"
     )),
-    scalaVersion := "2.12.15"
+    scalaVersion := "2.12.20"
   )
 )