diff --git a/CHANGELOG.md b/CHANGELOG.md
index b313da98a..654f019e0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -45,6 +45,7 @@ CLI command and its behaviour. There are no guarantees of stability for the
 - Implement handling LicenseRef in `download` and `init`. (#697)
 - Declared support for Python 3.12. (#846)
 - More file types are recognised:
+  - TCL (`.tcl`) (#871)
   - Julia (`.jl`) (#815)
   - Modern Fortran (`.f90`) (#836)
   - Bazel (`.bzl`) (#870)
diff --git a/src/reuse/comment.py b/src/reuse/comment.py
index a5dc312d4..edbb7aaac 100644
--- a/src/reuse/comment.py
+++ b/src/reuse/comment.py
@@ -717,6 +717,7 @@ class XQueryCommentStyle(CommentStyle):
     ".svg": UncommentableCommentStyle,
     ".svelte": HtmlCommentStyle,
     ".swift": CCommentStyle,
+    ".tcl": PythonCommentStyle,
     ".tex": TexCommentStyle,
     ".textile": HtmlCommentStyle,
     ".tf": PythonCommentStyle,