diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 95c3577..dcbf456 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.18, 3.3.7]
+        scala: [3.8.1, 3.3.7]
         java:
           - temurin@8
           - temurin@11
diff --git a/build.sbt b/build.sbt
index c3d36b4..b55079f 100644
--- a/build.sbt
+++ b/build.sbt
@@ -1,6 +1,6 @@
 Global / onChangedBuildSource := ReloadOnSourceChanges
 
-lazy val scala213 = "2.13.18"
+lazy val scala213 = "3.8.1"
 lazy val scala3 = "3.3.7"
 
 ThisBuild / crossScalaVersions := Seq(scala213, scala3)