diff --git a/build.gradle b/build.gradle
index be66f25d..47226c74 100644
--- a/build.gradle
+++ b/build.gradle
@@ -74,7 +74,7 @@ ext {
     junitSuiteVersion = '1.10.3'
     mockitoInlineVer  = '5.2.0'
     mockitoJupiterVer = '5.12.0'
-    rskjcoreVersion = '6.5.0-ARROWHEAD'
+    rskjcoreVersion = '6.6.0-SNAPSHOT'
 }
 
 dependencies {
diff --git a/src/main/resources/version.properties b/src/main/resources/version.properties
index 1fa13b42..1679487b 100644
--- a/src/main/resources/version.properties
+++ b/src/main/resources/version.properties
@@ -1,2 +1,2 @@
-versionNumber='6.5.0.0'
-modifier="ARROWHEAD"
+versionNumber='6.6.0.0'
+modifier="SNAPSHOT"