diff --git a/rskj-core/src/main/resources/config/main.conf b/rskj-core/src/main/resources/config/main.conf
index f2c9f5e3f4b..6860401d6af 100644
--- a/rskj-core/src/main/resources/config/main.conf
+++ b/rskj-core/src/main/resources/config/main.conf
@@ -10,7 +10,7 @@ blockchain.config {
         papyrus200 = 2392700,
         iris300 = 3614800,
         hop400 = 4598500,
-        hop401 = -1
+        hop401 = 4976300
     }
 }
 
diff --git a/rskj-core/src/main/resources/version.properties b/rskj-core/src/main/resources/version.properties
index f57c0482a9a..5a07e4060f9 100644
--- a/rskj-core/src/main/resources/version.properties
+++ b/rskj-core/src/main/resources/version.properties
@@ -1,2 +1,2 @@
 versionNumber='4.1.1'
-modifier="HOP-TESTNET"
+modifier="HOP"