diff --git a/envisage/tests/bad_eggs/acme.bad-0.1a1-py2.7.egg b/envisage/tests/bad_eggs/acme.bad-0.1a1-py2.7.egg
deleted file mode 100644
index 09e11961c..000000000
Binary files a/envisage/tests/bad_eggs/acme.bad-0.1a1-py2.7.egg and /dev/null differ
diff --git a/envisage/tests/bad_eggs/acme.bad-0.1a1-py3.9.egg b/envisage/tests/bad_eggs/acme.bad-0.1a1-py3.9.egg
new file mode 100644
index 000000000..adcb2a010
Binary files /dev/null and b/envisage/tests/bad_eggs/acme.bad-0.1a1-py3.9.egg differ
diff --git a/envisage/tests/eggs/acme.bar-0.1a1-py2.7.egg b/envisage/tests/eggs/acme.bar-0.1a1-py2.7.egg
deleted file mode 100644
index b4fcd92df..000000000
Binary files a/envisage/tests/eggs/acme.bar-0.1a1-py2.7.egg and /dev/null differ
diff --git a/envisage/tests/eggs/acme.bar-0.1a1-py3.9.egg b/envisage/tests/eggs/acme.bar-0.1a1-py3.9.egg
new file mode 100644
index 000000000..e9d997df1
Binary files /dev/null and b/envisage/tests/eggs/acme.bar-0.1a1-py3.9.egg differ
diff --git a/envisage/tests/eggs/acme.baz-0.1a1-py2.7.egg b/envisage/tests/eggs/acme.baz-0.1a1-py2.7.egg
deleted file mode 100644
index f9dc87231..000000000
Binary files a/envisage/tests/eggs/acme.baz-0.1a1-py2.7.egg and /dev/null differ
diff --git a/envisage/tests/eggs/acme.baz-0.1a1-py3.9.egg b/envisage/tests/eggs/acme.baz-0.1a1-py3.9.egg
new file mode 100644
index 000000000..676b14ce7
Binary files /dev/null and b/envisage/tests/eggs/acme.baz-0.1a1-py3.9.egg differ
diff --git a/envisage/tests/eggs/acme.foo-0.1a1-py2.7.egg b/envisage/tests/eggs/acme.foo-0.1a1-py2.7.egg
deleted file mode 100644
index ccce99fa5..000000000
Binary files a/envisage/tests/eggs/acme.foo-0.1a1-py2.7.egg and /dev/null differ
diff --git a/envisage/tests/eggs/acme.foo-0.1a1-py3.9.egg b/envisage/tests/eggs/acme.foo-0.1a1-py3.9.egg
new file mode 100644
index 000000000..1c5bbd424
Binary files /dev/null and b/envisage/tests/eggs/acme.foo-0.1a1-py3.9.egg differ