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-rw-r--r--requirements.txt8
1 files changed, 6 insertions, 2 deletions
diff --git a/requirements.txt b/requirements.txt
index 9c4a708a..057aa287 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,6 @@
-pbr>=0.5.21,<1.0
-Jinja2>=2.8 # BSD License (3 clause)
+# The order of packages is significant, because pip processes them in the order
+# of appearance. Changing the order has an impact on the overall integration
+# process, which may cause wedges in the gate later.
+pbr>=1.8 # Apache-2.0
+Jinja2!=2.9.0,!=2.9.1,!=2.9.2,!=2.9.3,!=2.9.4,>=2.8 # BSD License (3 clause)
+six>=1.9.0 # MIT