diff --git a/build.sbt b/build.sbt
index 36a0d53e..50b0e4a9 100644
--- a/build.sbt
+++ b/build.sbt
@@ -126,7 +126,7 @@ lazy val bench = project
     coverageEnabled := false,
     run / fork := true,
     libraryDependencies += {
-      val scalazV = if (tlIsScala3.value) "7.4.0-M14" else "7.3.8"
+      val scalazV = if (tlIsScala3.value) "7.4.0-M15" else "7.3.8"
       "org.scalaz" %% "scalaz-core" % scalazV
     }
   )