diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7234b8e..ce6d314 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.13, 2.13.4]
+        scala: [2.12.13, 2.13.5]
         java: [adopt@1.8]
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/build.sbt b/build.sbt
index 037652a..91b8f66 100644
--- a/build.sbt
+++ b/build.sbt
@@ -7,7 +7,7 @@ homepage := Some(url("http://sangria-graphql.org"))
 licenses := Seq("Apache License, ASL Version 2.0" → url("http://www.apache.org/licenses/LICENSE-2.0"))
 
 // sbt-github-actions needs configuration in `ThisBuild`
-ThisBuild / crossScalaVersions := Seq("2.12.13", "2.13.4")
+ThisBuild / crossScalaVersions := Seq("2.12.13", "2.13.5")
 ThisBuild / scalaVersion := crossScalaVersions.value.last
 ThisBuild / githubWorkflowPublishTargetBranches := List()
 ThisBuild / githubWorkflowBuildPreamble ++= List(