diff --git a/examples/requirements.txt b/examples/requirements.txt
index 925d83f..d3dfb09 100644
--- a/examples/requirements.txt
+++ b/examples/requirements.txt
@@ -7,6 +7,8 @@ alabaster==0.7.6
 Babel==2.1.1
 docutils==0.12
 gevent_subprocess==0.1.2
+gitpython==3.0.7
+hg-diff==
 Jinja2>=2.8.1
 MarkupSafe==0.23
 Pygments==2.0.2
@@ -15,6 +17,7 @@ six==1.10.0
 snowballstemmer==1.2.0
 Sphinx==1.3.3
 sphinx-rtd-theme==0.1.9
+svn==1.0.1
 zope.interface==4.2.0
 
 # Examples from PEP508
diff --git a/syntax/requirements.vim b/syntax/requirements.vim
index 8e60815..e23c62a 100644
--- a/syntax/requirements.vim
+++ b/syntax/requirements.vim
@@ -35,7 +35,7 @@ syn match requirementsCommandOption "\v^\[?--?[a-zA-Z\-]*\]?"
 syn match requirementsVersionSpecifiers "\v(\=\=\=?|\<\=?|\>\=?|\~\=|\!\=)"
 syn match requirementsPackageName "\v^([a-zA-Z0-9][a-zA-Z0-9\-_\.]*[a-zA-Z0-9])"
 syn match requirementsExtras "\v\[\S+\]"
-syn match requirementsVersionControls "\v(git\+|hg\+|svn\+|bzr\+)\S+"
+syn match requirementsVersionControls "\v(git\+?|hg\+|svn\+|bzr\+).*://.\S+"
 syn match requirementsURLs "\v(\@\s)?(https?|ftp|gopher)://?[^\s/$.?#].\S*"
 syn match requirementsEnvironmentMarkers "\v;\s[^#]+"