diff --git a/build.sbt b/build.sbt
index 176845bd88c..88d021376e8 100644
--- a/build.sbt
+++ b/build.sbt
@@ -109,7 +109,7 @@ libraryDependencies ++= Seq(
   "org.apache.commons" % "commons-text" % "1.10.0",
   "com.beust" % "jcommander" % "1.75",
   "org.scalatest" %% "scalatest" % "3.0.8" % "test",
-  "org.mockito" % "mockito-core" % "5.11.0" % Test,
+  "org.mockito" % "mockito-core" % "5.23.0" % Test,
   "software.amazon.awssdk" % "s3" % awsSdkVersion,
   "com.gu.etag-caching" %% "aws-s3-sdk-v2" % "7.0.0"
 )