diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b34a0b2..eb421b3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -219,7 +219,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.11]
+        scala: [2.13.12]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index 15e1265..97298a5 100644
--- a/build.sbt
+++ b/build.sbt
@@ -18,7 +18,7 @@ ThisBuild / tlFatalWarnings := false
 // publish website from this branch
 //ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.11"
+val Scala213 = "2.13.12"
 ThisBuild / crossScalaVersions := Seq(Scala213, "3.3.1")
 ThisBuild / scalaVersion := Scala213 // the default Scala