diff --git a/cedar-policy/src/api.rs b/cedar-policy/src/api.rs
index dc10a7214..c68664cf3 100644
--- a/cedar-policy/src/api.rs
+++ b/cedar-policy/src/api.rs
@@ -71,7 +71,7 @@ pub(crate) mod version {
         static ref SDK_VERSION: Version = env!("CARGO_PKG_VERSION").parse().unwrap();
         // Cedar language version
         // The patch version field may be unnecessary
-        static ref LANG_VERSION: Version = Version::new(4, 0, 0);
+        static ref LANG_VERSION: Version = Version::new(4, 2, 0);
     }
     /// Get the Cedar SDK Semantic Versioning version
     #[allow(clippy::module_name_repetitions)]
diff --git a/cedar-policy/src/tests.rs b/cedar-policy/src/tests.rs
index 3e2e1afbc..6a9f6a764 100644
--- a/cedar-policy/src/tests.rs
+++ b/cedar-policy/src/tests.rs
@@ -6292,7 +6292,7 @@ mod version_tests {
 
     #[test]
     fn test_lang_version() {
-        assert_eq!(get_lang_version().to_string(), "4.0.0");
+        assert_eq!(get_lang_version().to_string(), "4.2.0");
     }
 }