diff --git a/samples/kotlin-mcp-client/gradle/libs.versions.toml b/samples/kotlin-mcp-client/gradle/libs.versions.toml
index 2959a9a..6d4a979 100644
--- a/samples/kotlin-mcp-client/gradle/libs.versions.toml
+++ b/samples/kotlin-mcp-client/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-anthropic = "2.28.0"
+anthropic = "2.31.0"
 kotlin = "2.3.21"
 ktor = "3.3.3"
 mcp-kotlin = "0.12.0"