diff --git a/build.sbt b/build.sbt
index 06dc6383..6427339d 100644
--- a/build.sbt
+++ b/build.sbt
@@ -56,7 +56,7 @@ scriptedSbt := {
   if (jdk >= 21)
     "1.9.0" // first release that supports JDK21
   else
-    (pluginCrossBuild / sbtVersion).value
+    "1.4.9"
 }
 
 libraryDependencies += compilerPlugin(scalafixSemanticdb)