diff --git a/deployment-configs/flex-ocp-cord-openonupy-TT.yaml b/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
index 0d99135..a2ddc57 100644
--- a/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
+++ b/deployment-configs/flex-ocp-cord-openonupy-TT.yaml
@@ -50,7 +50,7 @@
     fortygig: 'true'
     aggPort: '1'
     serial: 'EC1838000853'
-    oltDebVersion: openolt_asfvolt16-3.3.3-1a5d68b50d8bcc5ba6cb1630d3294c30c37cd2f5-40G-NNI.deb
+    oltDebVersion: openolt_asfvolt16-3.4.1-dev-c5dcc7f2b27df1c42868b3a79a5416808511bb1d-40G-NNI.deb
     oltDebVersion23: openolt_asfvolt16-3.3.3-1a5d68b50d8bcc5ba6cb1630d3294c30c37cd2f5-40G-NNI.deb
 
 onus: