-pyaspects-URL := http://build.planet-lab.org/third-party/pyaspects-0.4.tar.gz
-pyaspects-SHA1SUM := 7ee1bc14688bc6cc7c31f49bf3378aeb9fd5768a
-pyaspects := $(notdir $(pyaspects-URL))
+pyaspects-URL1 := http://mirror.onelab.eu/third-party/pyaspects-0.4.1.tar.gz
+pyaspects-URL2 := http://build.planet-lab.org/third-party/pyaspects-0.4.1.tar.gz
+pyaspects-SHA1SUM := 6b9f0b5711b98ed2a6c6a85713325158de96193a
+pyaspects := $(notdir $(pyaspects-URL1))