diff --git a/build.sc b/build.sc
index 87312e5..2412343 100644
--- a/build.sc
+++ b/build.sc
@@ -19,7 +19,7 @@ import io.kipp.mill.ci.release.SonatypeHost
 
 val millVersions = Seq("0.10.15", "0.11.7")
 val millBinaryVersions = millVersions.map(scalaNativeBinaryVersion)
-val scala213 = "2.13.12"
+val scala213 = "2.13.13"
 val artifactBase = "mill-github-dependency-graph"
 
 def millBinaryVersion(millVersion: String) = scalaNativeBinaryVersion(
diff --git a/itest/src/cyclical/build.sc b/itest/src/cyclical/build.sc
index e1dd812..d883737 100644
--- a/itest/src/cyclical/build.sc
+++ b/itest/src/cyclical/build.sc
@@ -8,7 +8,7 @@ import munit.Assertions._
 
 object overflow extends ScalaModule {
 
-  def scalaVersion = "2.13.12"
+  def scalaVersion = "2.13.13"
 
   // See https://github.com/ckipp01/mill-github-dependency-graph/issues/77 for the context
   // of this test. The main issue is that when you look at the children of this dep in coursier
diff --git a/itest/src/cyclical/manifests.json b/itest/src/cyclical/manifests.json
index bc997c9..ddc889b 100644
--- a/itest/src/cyclical/manifests.json
+++ b/itest/src/cyclical/manifests.json
@@ -15,7 +15,7 @@
         "relationship": "indirect",
         "package_url": "pkg:maven/io.netty/netty-tcnative-classes@2.0.54.Final"
       },
-      "org.scala-lang:scala-library:2.13.12": {
+      "org.scala-lang:scala-library:2.13.13": {
         "metadata": {
           
         },
@@ -23,7 +23,7 @@
           
         ],
         "relationship": "direct",
-        "package_url": "pkg:maven/org.scala-lang/scala-library@2.13.12"
+        "package_url": "pkg:maven/org.scala-lang/scala-library@2.13.13"
       },
       "io.netty:netty-tcnative-boringssl-static:2.0.54.Final": {
         "metadata": {