diff --git a/nix/canton-sources.json b/nix/canton-sources.json
index 1f91fa5f48..ad4da3015d 100644
--- a/nix/canton-sources.json
+++ b/nix/canton-sources.json
@@ -1,7 +1,7 @@
 {
-  "version": "3.4.8-snapshot.20251112.17388.0.vf9e0d623",
+  "version": "3.4.9-ad-hoc.20251120.17418.0.vcc2b31e2",
   "tooling_sdk_version": "3.3.0-snapshot.20250415.13756.0.vafc5c867",
   "daml_release": "v3.3.0-snapshot.20250417.0",
-  "enterprise_sha256": "sha256:04klb5z1wyrbhfqy1bisqv8pb780sf2s069c9gi02wsywa9fa43m",
-  "oss_sha256": "sha256:18w6y5b0hqcdnz37b8kaakv95jz8827vbcb69dhfa1slsxwm5xb4"
+  "enterprise_sha256": "sha256:0ch6d0hw5lycy4w353gbjx9fwbcav8xz97xj7hi7w4xkg79z1vx0",
+  "oss_sha256": "sha256:11ppgv4h7npr2mj7qhhw2vfcafkvlrvsppzrgpa800f77chz5vg0"
 }