diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2121d996..d3ced54f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@
 
 * [#671](https://github.com/clojure-emacs/clojure-mode/issues/671): Syntax highlighting for digits after the first in % args
 
+# Changes
+
+* [#675](https://github.com/clojure-emacs/clojure-mode/issues/675): Add `.lpy` to the list of known Clojure file extensions. 
+
 ## 5.18.1 (2023-11-24)
 
 ### Bugs fixed
diff --git a/clojure-mode.el b/clojure-mode.el
index d69f1c5e..71b40a73 100644
--- a/clojure-mode.el
+++ b/clojure-mode.el
@@ -236,6 +236,7 @@ For example, \[ is allowed in :db/id[:db.part/user]."
     "shadow-cljs.edn"  ; shadow-cljs
     "bb.edn"           ; babashka
     "nbb.edn"          ; nbb
+    "basilisp.edn"     ; Basilisp (Python)
     )
   "A list of files, which identify a Clojure project's root.
 Out-of-the box `clojure-mode' understands lein, boot, gradle,
@@ -3320,7 +3321,7 @@ With universal argument \\[universal-argument], act on the \"top-level\" form."
 ;;;###autoload
 (progn
   (add-to-list 'auto-mode-alist
-               '("\\.\\(clj\\|cljd\\|dtm\\|edn\\)\\'" . clojure-mode))
+               '("\\.\\(clj\\|cljd\\|dtm\\|edn\\|lpy\\)\\'" . clojure-mode))
   (add-to-list 'auto-mode-alist '("\\.cljc\\'" . clojurec-mode))
   (add-to-list 'auto-mode-alist '("\\.cljs\\'" . clojurescript-mode))
   ;; boot build scripts are Clojure source files