diff --git a/bin/env.bash b/bin/env.bash
index c4b9b427..78050a50 100644
--- a/bin/env.bash
+++ b/bin/env.bash
@@ -1,7 +1,7 @@
 set -euo pipefail
 
 system=$(uname)
-if [[ $system == "Linux" ]]; then
+if [[ $system == "Linux" ]] || [[ $system == "NetBSD" ]]; then
     ext="so"
 elif [[ $system == "FreeBSD" ]]; then
     ext="so"
diff --git a/lisp/tree-sitter-load.el b/lisp/tree-sitter-load.el
index 8255ca44..6dd50f49 100644
--- a/lisp/tree-sitter-load.el
+++ b/lisp/tree-sitter-load.el
@@ -33,9 +33,7 @@ See `tree-sitter-require'.")
   (pcase system-type
     ;; The CLI tool outputs `.so', but `.dylib' is more sensible on macOS.
     ('darwin (list ".dylib" ".so"))
-    ('berkeley-unix (list ".so"))
-    ('gnu/linux (list ".so"))
-    ('android (list ".so"))
+    ((or 'gnu 'gnu/linux 'gnu/kfreebsd 'berkeley-unix 'android) (list ".so"))
     ('windows-nt (list ".dll"))
     (_ (error "Unsupported system-type %s" system-type)))
   "List of suffixes for shared libraries that define tree-sitter languages.")