diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 84914e2..ccdb7b5 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.11.12, 2.12.12, 2.13.8]
+        scala: [2.11.12, 2.12.12, 2.13.15]
         java:
           - adopt-hotspot@8
           - adopt-hotspot@11
@@ -71,7 +71,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.8]
+        scala: [2.13.15]
         java: [adopt-hotspot@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -158,7 +158,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.8]
+        scala: [2.13.15]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     env:
@@ -219,7 +219,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.8]
+        scala: [2.13.15]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -272,7 +272,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.8]
+        scala: [2.13.15]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps: