diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ac2a3f..d6b419d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -97,6 +97,8 @@
 * (gazelle) Generate a single `py_test` target when `gazelle:python_generation_mode project`
   is used.
 
+* (toolchains) Keep tcl subdirectory in Windows build of hermetic interpreter.
+
 * (bzlmod) sub-modules now don't have the `//conditions:default` clause in the
   hub repos created by `pip.parse`. This should fix confusing error messages
   in case there is a misconfiguration of toolchains or a bug in `rules_python`.
diff --git a/python/repositories.bzl b/python/repositories.bzl
index b293b55..37cc34e 100644
--- a/python/repositories.bzl
+++ b/python/repositories.bzl
@@ -259,6 +259,7 @@
             "libs/**",
             "Scripts/**",
             "share/**",
+            "tcl/**",
         ]
     else:
         glob_include += [