diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 79377d5..71c3617 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.17, 2.13.8]
+        scala: [2.12.17, 2.13.15]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -76,7 +76,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.8]
+        scala: [2.13.15]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index 0b1ea4e..51372dd 100644
--- a/build.sbt
+++ b/build.sbt
@@ -12,7 +12,7 @@ licenses := Seq(
   )
 )
 
-ThisBuild / crossScalaVersions := Seq("2.12.17", "2.13.8")
+ThisBuild / crossScalaVersions := Seq("2.12.17", "2.13.15")
 ThisBuild / scalaVersion := crossScalaVersions.value.last
 ThisBuild / githubWorkflowPublishTargetBranches := List()
 ThisBuild / githubWorkflowBuildPreamble += WorkflowStep.Sbt(
@@ -64,7 +64,7 @@ ThisBuild / shellPrompt := { state =>
 
 inThisBuild(
   List(
-    scalaVersion := "2.13.8",
+    scalaVersion := "2.13.15",
     semanticdbEnabled := true,
     semanticdbVersion := scalafixSemanticdb.revision
   )