diff --git a/frontends/verilog/verilog_parser.y b/frontends/verilog/verilog_parser.y
index e299d3148..392d8921a 100644
--- a/frontends/verilog/verilog_parser.y
+++ b/frontends/verilog/verilog_parser.y
@@ -33,7 +33,7 @@
  *
  */
 
-%require "3.8"
+%require "3.6"
 %language "c++"
 %define api.value.type variant
 %define api.prefix {frontend_verilog_yy}