diff --git a/requirements.txt b/requirements.txt
index 353a4d3f92cf07599996b69010c9a94818325752..cf26a979fe9f21e98fda7172dc51c04e7f7a2012 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,12 +1,12 @@
 numpy
-git+https://github.com/inducer/islpy
-git+https://github.com/pyopencl/pyopencl
-git+https://github.com/inducer/loopy
+git+https://github.com/inducer/islpy.git
+git+https://github.com/pyopencl/pyopencl.git
+git+https://github.com/inducer/loopy.git
 git+https://gitlab.tiker.net/inducer/dagrt.git
 git+https://gitlab.tiker.net/inducer/leap.git
-git+https://github.com/inducer/meshpy
-git+https://github.com/inducer/modepy
-git+https://github.com/inducer/meshmode
+git+https://github.com/inducer/meshpy.git
+git+https://github.com/inducer/modepy.git
+git+https://github.com/inducer/meshmode.git
 
 # mesh generation for tests
 meshpy