diff --git a/gradle.properties b/gradle.properties
index f4e58dbab4..71ee4f7d4a 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -9,7 +9,7 @@ cordaProductVersion = 5.1.0
 # NOTE: update this each time this module contains a breaking change
 ## NOTE: currently this is a top level revision, so all API versions will line up, but this could be moved to
 ##   a per module property in which case module versions can change independently.
-cordaApiRevision = 26
+cordaApiRevision = 27
 
 # Main
 kotlinVersion = 1.8.21