diff --git a/lab1/build.sbt b/lab1/build.sbt
index 29f434d..e2ae19d 100644
--- a/lab1/build.sbt
+++ b/lab1/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.8"
+scalaVersion := "2.12.13"
 
 scalacOptions := Seq("-Xsource:2.11")
 
diff --git a/lab2/build.sbt b/lab2/build.sbt
index 29f434d..e2ae19d 100644
--- a/lab2/build.sbt
+++ b/lab2/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.8"
+scalaVersion := "2.12.13"
 
 scalacOptions := Seq("-Xsource:2.11")
 
diff --git a/lab3/build.sbt b/lab3/build.sbt
index 1f4ab69..b6ec2f9 100644
--- a/lab3/build.sbt
+++ b/lab3/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.8"
+scalaVersion := "2.12.13"
 
 scalacOptions := Seq("-Xsource:2.11")
 
diff --git a/lab4/build.sbt b/lab4/build.sbt
index cc5d3ff..446d106 100644
--- a/lab4/build.sbt
+++ b/lab4/build.sbt
@@ -1,4 +1,4 @@
-scalaVersion := "2.12.8"
+scalaVersion := "2.12.13"
 
 scalacOptions := Seq("-Xsource:2.11")