diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 03ba6ca9..e3f5cbbe 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.20, 2.13.16, 3.3.6]
+        scala: [2.12.21, 2.13.16, 3.3.6]
         java: [17, 21]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index dacf0bcd..3db835de 100644
--- a/build.sbt
+++ b/build.sbt
@@ -20,8 +20,8 @@ ThisBuild / developers := List(
 )
 
 val commonSettings = Seq(
-  ThisBuild / scalaVersion := "2.12.20",
-  crossScalaVersions := Seq("2.12.20", "2.13.16", "3.3.6"),
+  ThisBuild / scalaVersion := "2.12.21",
+  crossScalaVersions := Seq("2.12.21", "2.13.16", "3.3.6"),
 
   ThisBuild / parallelExecution := false,
   fork := true,