diff --git a/build.sbt b/build.sbt
index 00196963..3030c306 100644
--- a/build.sbt
+++ b/build.sbt
@@ -4,7 +4,7 @@ val disciplineScalaTestVersion = "2.3.0"
 val enumeratumVersion = "1.9.7"
 val jacksonVersion = "2.21.3"
 val magnolia2Version = "0.17.0"
-val magnolia3Version = "1.3.18"
+val magnolia3Version = "1.3.20"
 val munitVersion = "1.3.0"
 val munitScalaCheckVersion = "1.3.0"
 val refinedVersion = "0.11.3"