1 files changed, 1 insertions, 1 deletions
diff --git a/build.sbt b/build.sbt
index 3e5f591b..7945f512 100644
--- a/build.sbt
+++ b/build.sbt
@@ -93,7 +93,7 @@ lazy val antlrSettings = Seq(
   antlr4GenVisitor in Antlr4 := true,
   antlr4GenListener in Antlr4 := false,
   antlr4PackageName in Antlr4 := Option("firrtl.antlr"),
-  antlr4Version in Antlr4 := "4.8",
+  antlr4Version in Antlr4 := "4.9.2",
   javaSource in Antlr4 := (sourceManaged in Compile).value
 )