diff --git a/PKG-INFO b/PKG-INFO
index 1c46a7614c9610e827f6c92b63dda0b85e623552..5686739b8832f9f424031f4794cd236ad8a0b108 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: swh.model
-Version: 0.0.16
+Version: 0.0.17
 Summary: Software Heritage data model
 Home-page: https://forge.softwareheritage.org/diffusion/DMOD/
 Author: Software Heritage developers
diff --git a/debian/control b/debian/control
index 3e7fc44efb63e204152845e0ff6f697268c39e0c..f85b0fa6f474d5fff9b16b3be467da0256b3e23e 100644
--- a/debian/control
+++ b/debian/control
@@ -7,7 +7,7 @@ Build-Depends: debhelper (>= 9),
                python3-all,
                python3-nose,
                python3-setuptools,
-               python3-pyblake2,
+               python3 (>= 3.5) | python3-pyblake2,
                python3-vcversioner
 Standards-Version: 3.9.6
 Homepage: https://forge.softwareheritage.org/diffusion/DMOD/
diff --git a/requirements-swh.txt b/requirements-swh.txt
index fbe63bd90787cff4ad7e1a774a2cbffa4a20b17f..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/requirements-swh.txt
+++ b/requirements-swh.txt
@@ -1 +0,0 @@
-pyblake2
diff --git a/setup.py b/setup.py
index a520dc09a36de511b7acae984cc43e8efd222ddb..793b8e7d10393f030b9d4cc07ded3f78ed176976 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,5 @@
+import sys
+
 from setuptools import setup
 
 
@@ -13,6 +15,10 @@ def parse_requirements():
     return requirements
 
 
+extra_requirements = []
+if sys.version_info < (3, 5):
+    extra_requirements = ['pyblake2']
+
 setup(
     name='swh.model',
     description='Software Heritage data model',
@@ -24,7 +30,7 @@ setup(
         'swh.model.tests', 'swh.model.tests.fields',
     ],  # packages's modules
     scripts=[],   # scripts to package
-    install_requires=parse_requirements(),
+    install_requires=parse_requirements() + extra_requirements,
     setup_requires=['vcversioner'],
     vcversioner={},
     include_package_data=True,
diff --git a/swh.model.egg-info/PKG-INFO b/swh.model.egg-info/PKG-INFO
index 1c46a7614c9610e827f6c92b63dda0b85e623552..5686739b8832f9f424031f4794cd236ad8a0b108 100644
--- a/swh.model.egg-info/PKG-INFO
+++ b/swh.model.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.0
 Name: swh.model
-Version: 0.0.16
+Version: 0.0.17
 Summary: Software Heritage data model
 Home-page: https://forge.softwareheritage.org/diffusion/DMOD/
 Author: Software Heritage developers
diff --git a/swh.model.egg-info/requires.txt b/swh.model.egg-info/requires.txt
index 77d4685af0f9d86eb3a67063879b0442b684a389..39a323addb39c408716b8874ef828acd3c4da427 100644
--- a/swh.model.egg-info/requires.txt
+++ b/swh.model.egg-info/requires.txt
@@ -1,2 +1 @@
-pyblake2
 vcversioner
diff --git a/version.txt b/version.txt
index bbf69d824964a943bad2d99cbc9c342ba62bbfcd..155f9176266716cbc564ef72622a80ae282fb380 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-v0.0.16-0-g6f89adf
\ No newline at end of file
+v0.0.17-0-g11de644
\ No newline at end of file