diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7083148..4f2b9bd 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.14, 2.13.6, 3.0.0]
+        scala: [2.12.15, 2.13.6, 3.0.0]
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -96,12 +96,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.14)
+      - name: Download target directories (2.12.15)
         uses: actions/download-artifact@v2
         with:
-          name: target-${{ matrix.os }}-2.12.14-${{ matrix.java }}
+          name: target-${{ matrix.os }}-2.12.15-${{ matrix.java }}
 
-      - name: Inflate target directories (2.12.14)
+      - name: Inflate target directories (2.12.15)
         run: |
           tar xf targets.tar
           rm targets.tar
diff --git a/build.sbt b/build.sbt
index 8258c25..146a0d9 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,4 +1,4 @@
-lazy val scala212 = "2.12.14"
+lazy val scala212 = "2.12.15"
 lazy val scala213 = "2.13.6"
 lazy val scalaJs  = "0.6.31"
 lazy val scala3   = "3.0.0"
diff --git a/modules/document/.github/workflows/ci.yml b/modules/document/.github/workflows/ci.yml
index 610aa96..7158f8d 100644
--- a/modules/document/.github/workflows/ci.yml
+++ b/modules/document/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.14, 2.13.6, 3.0.0]
+        scala: [2.12.15, 2.13.6, 3.0.0]
         java: [adopt@1.11]
     runs-on: ${{ matrix.os }}
     steps: