diff --git a/modules/openapi-generator/src/main/resources/scala-lagom-server/build.sbt.mustache b/modules/openapi-generator/src/main/resources/scala-lagom-server/build.sbt.mustache
index ae8fb48f3c91..15a25fee9335 100644
--- a/modules/openapi-generator/src/main/resources/scala-lagom-server/build.sbt.mustache
+++ b/modules/openapi-generator/src/main/resources/scala-lagom-server/build.sbt.mustache
@@ -4,7 +4,7 @@ name          := "{{artifactId}}"
 
 organization  := "{{groupId}}"
 
-scalaVersion  := "2.11.8"
+scalaVersion  := "2.13.13"
 
 val playJsonDerivedCodecs = "org.julienrf" %% "play-json-derived-codecs" % "3.3"
 
diff --git a/modules/openapi-generator/src/main/resources/scala-play-server/build.sbt.mustache b/modules/openapi-generator/src/main/resources/scala-play-server/build.sbt.mustache
index c6122070664f..938bff39de00 100644
--- a/modules/openapi-generator/src/main/resources/scala-play-server/build.sbt.mustache
+++ b/modules/openapi-generator/src/main/resources/scala-play-server/build.sbt.mustache
@@ -1,7 +1,7 @@
 organization := "{{groupId}}"
 version      := "{{artifactVersion}}"
 name         := "{{artifactId}}"
-scalaVersion := "2.12.6"
+scalaVersion := "2.13.13"
 
 enablePlugins(PlayScala)
 
diff --git a/samples/server/petstore/scala-lagom-server/build.sbt b/samples/server/petstore/scala-lagom-server/build.sbt
index 06bddbaeb63f..d7ae36b0a069 100644
--- a/samples/server/petstore/scala-lagom-server/build.sbt
+++ b/samples/server/petstore/scala-lagom-server/build.sbt
@@ -4,7 +4,7 @@ name          := "scala-lagom-server"
 
 organization  := "org.openapitools"
 
-scalaVersion  := "2.11.8"
+scalaVersion  := "2.13.13"
 
 val playJsonDerivedCodecs = "org.julienrf" %% "play-json-derived-codecs" % "3.3"
 
diff --git a/samples/server/petstore/scala-play-server/build.sbt b/samples/server/petstore/scala-play-server/build.sbt
index be4f9eabd1be..6d8679b8b668 100644
--- a/samples/server/petstore/scala-play-server/build.sbt
+++ b/samples/server/petstore/scala-play-server/build.sbt
@@ -1,7 +1,7 @@
 organization := ""
 version      := ""
 name         := ""
-scalaVersion := "2.12.6"
+scalaVersion := "2.13.13"
 
 enablePlugins(PlayScala)