diff --git a/post-deployment/Makefile b/post-deployment/Makefile
index 4efb6c8c3b233847d32b0adcb6afaddbcde1f4fb..cc4d44f7aaa6be710a16d5a7be859e789a0b9e2d 100644
--- a/post-deployment/Makefile
+++ b/post-deployment/Makefile
@@ -25,4 +25,6 @@ test: install
 .PHONY: all test install
 
 install:
-	pip3 install -r test_requirements.txt
+	pip3 -q install -r test_requirements.txt;
+	@echo "############ post-deployment/test_requirements.txt versions not necessarily fixed - see build/python_packages_installed_for_test.pip3 ###############"
+	@pip3 list >> build/python_packages_installed_for_test.pip3