diff --git a/docs/python-support.md b/docs/python-support.md
index ba75f28d9..87d37e627 100644
--- a/docs/python-support.md
+++ b/docs/python-support.md
@@ -45,10 +45,10 @@ that are critical to us.
 That said, let's assume we need functionality that only exists in Python 3.7.
 How do we decide when it's acceptable to drop Python 3.6?
 
-1.  Review what major distros are using the previous version of Python, and
-    when they go EOL (e.g. via [Ubuntu releases] & [Debian releases]).
-    Generally we care about Ubuntu LTS & current/previous Debian stable
-    versions.
+1.  Review what major distros are using the previous version of Python (e.g.
+    via [Repology Python versions]), and when they go EOL (e.g. via
+    [Ubuntu releases] & [Debian releases]).  Generally we care about Ubuntu LTS
+    & current/previous Debian stable versions.
     *   If they're all EOL already, then go for it, drop support.
     *   If they aren't EOL, start a thread on [repo-discuss] to see how the user
         base feels about the proposal.
@@ -89,6 +89,7 @@ $ repo-2.32 init --repo-rev=repo-1 ...
 
 [repo-discuss]: https://groups.google.com/forum/#!forum/repo-discuss
 [Debian releases]: https://wiki.debian.org/DebianReleases#Versions_of_Debian_stable
+[Repology Python versions]: https://repology.org/project/python/versions
 [repo hooks]: ./repo-hooks.md
 [repo launcher]: ../repo
 [Ubuntu releases]: https://wiki.ubuntu.com/Releases
diff --git a/requirements.json b/requirements.json
index 513a02c54..d19b66bc6 100644
--- a/requirements.json
+++ b/requirements.json
@@ -19,11 +19,14 @@
 # Hard versions are when we refuse to work the tool.  Users will be shown an
 # error message before we abort entirely.
 
-# When deciding whether to upgrade a version requirement, check out what versions
-# major distros (e.g. Ubuntu LTS & Debian stable) ship to see who will be
-# impacted:
+# When deciding whether to upgrade a version requirement, check out what
+# versions major distros (e.g. Ubuntu LTS & Debian stable) ship and when they
+# go EOL to see who will be impacted:
 # https://wiki.ubuntu.com/Releases
 # https://wiki.debian.org/DebianReleases#Versions_of_Debian_stable
+# https://repology.org/project/python/versions
+# https://repology.org/project/git/versions
+# https://repology.org/project/openssh/versions
 
 {
   # The repo launcher itself.  This allows us to force people to upgrade as some