diff --git a/nix/build-all.py b/nix/build-all.py
index ad9a6675b5..bcf224f5ab 100644
--- a/nix/build-all.py
+++ b/nix/build-all.py
@@ -274,6 +274,8 @@ def gather_dependencies(dep: str) -> "Generator[str]":
 
 if "v" in flags:
     logger.setLevel(logging.DEBUG)
+    formatter = logging.Formatter("%(asctime)s - %(levelname)s - %(message)s")
+    ch.setFormatter(formatter)
 else:
     logger.setLevel(logging.INFO)