diff --git a/build.sbt b/build.sbt
index 05b25c3..cd4147b 100644
--- a/build.sbt
+++ b/build.sbt
@@ -9,7 +9,7 @@ val scala2_13 = "2.13.7"
 val scala2 = List(scala2_11, scala2_12, scala2_13)
 val scala3 = List("3.1.0")
 
-val sttpModelVersion = "1.4.19"
+val sttpModelVersion = "1.4.20"
 
 val scalaTestVersion = "3.2.10"
 val zio1Version = "1.0.13"