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-rw-r--r--requirements.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/requirements.txt b/requirements.txt
index ed3f76a..581071e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,6 +9,7 @@
pbr>=1.6
six>=1.9.0
+funcsigs>=0.4;python_version=='2.7' or python_version=='2.6'
iso8601>=0.1.9
oslo.i18n>=1.5.0 # Apache-2.0
monotonic>=0.3 # Apache-2.0