diff --git a/arend.yaml b/arend.yaml
index 93003937..a1bec93d 100644
--- a/arend.yaml
+++ b/arend.yaml
@@ -1,4 +1,4 @@
-langVersion: 1.5.1
+langVersion: 1.6.0
 sourcesDir: src
 testsDir: test
 binariesDir: bin
diff --git a/meta/build.gradle.kts b/meta/build.gradle.kts
index 400bcc57..96a5abeb 100644
--- a/meta/build.gradle.kts
+++ b/meta/build.gradle.kts
@@ -8,7 +8,7 @@ tasks.register<JavaExec>("cliCheck") {
     group = "verification"
     dependsOn(projectArend.task(":cli:jarDep"), tasks.named("classes"))
     main = "-jar"
-    val jarDepPath = projectArend.projectDir.resolve("cli/build/libs/cli-1.5.1-full.jar").absolutePath
+    val jarDepPath = projectArend.projectDir.resolve("cli/build/libs/cli-1.6.0-full.jar").absolutePath
     args(jarDepPath, "-tcr")
     workingDir(projectDir.parent)
 }