diff --git a/build.sc b/build.sc
index 00ca44cce..7a51d9da1 100644
--- a/build.sc
+++ b/build.sc
@@ -57,7 +57,7 @@ val scala2_13Versions = 2.to(14)
   .map(v => s"2.13.${v}")
 val scala33Versions = Seq("3.3.0", "3.3.1", "3.3.2", "3.3.3")
 //  .dropWhile(v => isJava21 && v == "3.3.0")
-val scala34Versions = Seq("3.4.2")
+val scala34Versions = Seq("3.4.3")
 
 val scala2Versions = scala2_12Versions ++ scala2_13Versions
 val scala3Versions = scala33Versions ++ scala34Versions