diff --git a/core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/WellKnownThreadSafety.java b/core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/WellKnownThreadSafety.java
index 9aea947a68a..dc2202906a1 100644
--- a/core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/WellKnownThreadSafety.java
+++ b/core/src/main/java/com/google/errorprone/bugpatterns/threadsafety/WellKnownThreadSafety.java
@@ -149,6 +149,7 @@ private static ImmutableMap<String, AnnotationInfo> buildThreadSafeClasses(
         .add("kotlinx.coroutines.flow.MutableStateFlow", "T")
         .add("kotlinx.coroutines.sync.Mutex")
         .add("kotlinx.coroutines.sync.Semaphore")
+        .add("kotlin.Result", "T")
         .add("kotlin.Unit")
         .add("org.bouncycastle.cms.CMSSignedData")
         .add("org.bouncycastle.pkcs.PKCS10CertificationRequest")