diff --git a/doc/languages-frameworks/python.md b/doc/languages-frameworks/python.md
index 810f96b2769..9172d712213 100644
--- a/doc/languages-frameworks/python.md
+++ b/doc/languages-frameworks/python.md
@@ -530,7 +530,6 @@ Based on the packages defined in `pkgs/top-level/python-packages.nix` an
 attribute set is created for each available Python interpreter. The available
 sets are
 
-* `pkgs.python26Packages`
 * `pkgs.python27Packages`
 * `pkgs.python34Packages`
 * `pkgs.python35Packages`
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index f5b2dc79ce6..13df874194e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -6636,6 +6636,7 @@ with pkgs;
 
   # Python interpreters. All standard library modules are included except for tkinter, which is
   # available as `pythonPackages.tkinter` and can be used as any other Python package.
+  # When switching these sets, please update docs at ../../doc/languages-frameworks/python.md
   python = python2;
   python2 = python27;
   python3 = python36;