diff --git a/install-requirements.txt b/install-requirements.txt
index 81faed161c2ec436fb1723bfb3d1465b0e94a480_aW5zdGFsbC1yZXF1aXJlbWVudHMudHh0..cdc11a4d00bc6d2bcdb70696392df99ba3c504f5_aW5zdGFsbC1yZXF1aXJlbWVudHMudHh0 100644
--- a/install-requirements.txt
+++ b/install-requirements.txt
@@ -4,3 +4,4 @@
 dulwich
 requests
 requests_unixsocket==0.2.0
+attrs~=20.3.0
diff --git a/setup.py b/setup.py
index 81faed161c2ec436fb1723bfb3d1465b0e94a480_c2V0dXAucHk=..cdc11a4d00bc6d2bcdb70696392df99ba3c504f5_c2V0dXAucHk= 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@
 
 setup(
     name='heptapod',
-    version='1.1.2',
+    version='1.1.3',
     author='Georges Racinet',
     author_email='georges.racinet@octobus.net',
     url='https://foss.heptapod.net/heptapod/py-heptapod',