diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 770d0fe..6e9d14a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
         scala: ['2.13', '3.3', '3.4', '3.5']
         include:
           - scala: '2.13'
-            scala-version: 2.13.9
+            scala-version: 2.13.15
           - scala: '3.3'
             scala-version: 3.3.3  # LTS
           - scala: '3.4'
diff --git a/build.sbt b/build.sbt
index 500f9c4..3fde32e 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ organization       := "com.github.carueda"
 name               := "tscfg"
 version            := "1.1.4"
 scalaVersion       := "3.3.3"
-crossScalaVersions := Seq("2.13.9", "3.3.3")
+crossScalaVersions := Seq("2.13.15", "3.3.3")
 
 buildInfoKeys    := Seq[BuildInfoKey](version)
 buildInfoPackage := "tscfg"