diff --git a/etc/circt.json b/etc/circt.json
index 13421209d5..77c1389d5f 100644
--- a/etc/circt.json
+++ b/etc/circt.json
@@ -1,3 +1,3 @@
 {
-  "version": "firtool-1.90.1"
+  "version": "firtool-1.91.0"
 }