diff --git a/build.sbt b/build.sbt
index 957d7ad..9f78aec 100644
--- a/build.sbt
+++ b/build.sbt
@@ -180,7 +180,7 @@ lazy val library: Project = (project in file("library"))
         ).toSeq
       }
     }.taskValue,
-    libraryDependencies += "com.lihaoyi" %% "utest" % "0.8.9" % Test,
+    libraryDependencies += "com.lihaoyi" %% "utest" % "0.9.1" % Test,
     testFrameworks += new TestFramework("utest.runner.Framework"),
   )