diff --git a/build.sbt b/build.sbt
index 632d2cd..1ef611e 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ lazy val circeVersion       = "0.14.6"
 lazy val pureconfigVersion  = "0.17.6"
 lazy val redis4CatsVersion  = "1.7.0"
 lazy val sttpClient3Version = "3.9.5"
-lazy val sttpClient4Version = "4.0.0-M12"
+lazy val sttpClient4Version = "4.0.0-M13"
 lazy val langchain4jVersion = "0.30.0"
 lazy val xefVersion         = "0.0.3"