diff --git a/build.sbt b/build.sbt
index f5432345..4fb8063e 100644
--- a/build.sbt
+++ b/build.sbt
@@ -17,7 +17,7 @@ val V = new {
   val postgresql                = "42.7.1"
   val `scala-collection-compat` = "2.11.0"
   val slf4j                     = "2.0.11"
-  val sttp                      = "4.0.0-M8"
+  val sttp                      = "4.0.0-M9"
   val upickle                   = "3.1.4"
   val vulcan                    = "1.10.1"
   val `zio-interop`             = "23.1.0.0"