diff --git a/apps/api/src/services/build/manifest_compiler.py b/apps/api/src/services/build/manifest_compiler.py
index 62d834f..3bcd47c 100644
--- a/apps/api/src/services/build/manifest_compiler.py
+++ b/apps/api/src/services/build/manifest_compiler.py
@@ -582,7 +582,7 @@ def compute_image_tag(tool_name: str, manifest: dict) -> str:
     Returns:
         Docker image tag string.
     """
-    compiler_version = "v2"  # bump when compile_dockerfile/entrypoint/compose change
+    compiler_version = "v3"  # bump when compile_dockerfile/entrypoint/compose change
     canonical = json.dumps(manifest, sort_keys=True, separators=(",", ":"))
     hash_suffix = hashlib.sha256(
         f"{compiler_version}:{canonical}".encode()