diff --git a/tox.ini b/tox.ini
index e5595a9d6..afc237069 100644
--- a/tox.ini
+++ b/tox.ini
@@ -185,7 +185,9 @@ deps =
 # Setting PYTHONHASHSEED to a known value assists with reproducible builds.
 # See https://pyinstaller.readthedocs.io/en/stable/advanced-topics.html#creating-a-reproducible-build
 setenv=PYTHONHASHSEED=1
-commands=pyinstaller -y --clean pyinstaller.spec
+commands=
+    pip freeze
+    pyinstaller -y --clean pyinstaller.spec
 
 [testenv:tarballs]
 deps =