1 files changed, 1 insertions, 1 deletions
diff --git a/flake.nix b/flake.nix
index b89b6d9218..a07a619a2b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -122,7 +122,7 @@
                 languages.python.poetry.activate.enable = true;
                 # Install all extra Python dependencies; this is needed to run the unit
                 # tests and utilitise all Synapse features.
-                languages.python.poetry.install.arguments = ["--extras all"];
+                languages.python.poetry.install.arguments = ["-vvv" "--extras all"];
                 # Install the 'matrix-synapse' package from the local checkout.
                 languages.python.poetry.install.installRootPackage = true;