diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b68ce44f..0933ba59 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,7 +29,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.10, 3.2.1]
+        scala: [2.13.16, 3.2.1]
         java: [temurin@11, temurin@17]
         project: [rootJVM]
         exclude:
@@ -134,7 +134,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.10]
+        scala: [2.13.16]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
@@ -226,7 +226,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.13.10]
+        scala: [2.13.16]
         java: [temurin@11]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index 4cdd0a49..a58abe98 100644
--- a/build.sbt
+++ b/build.sbt
@@ -10,7 +10,7 @@ ThisBuild / developers := List(
 // publish website from this branch
 ThisBuild / tlSitePublishBranch := Some("main")
 
-val Scala213 = "2.13.10"
+val Scala213 = "2.13.16"
 ThisBuild / crossScalaVersions := Seq(Scala213, "3.2.1")
 ThisBuild / scalaVersion := Scala213 // the default Scala