diff --git a/builtin/worktree.c b/builtin/worktree.c
index 9efdc22466..4e7c98758f 100644
--- a/builtin/worktree.c
+++ b/builtin/worktree.c
@@ -345,9 +345,23 @@ static int add_worktree(const char *path, const char *refname,
 	 * Hook failure does not warrant worktree deletion, so run hook after
 	 * is_junk is cleared, but do return appropriate code when hook fails.
 	 */
-	if (!ret && opts->checkout)
-		ret = run_hook_le(NULL, "post-checkout", oid_to_hex(&null_oid),
-				  oid_to_hex(&commit->object.oid), "1", NULL);
+	if (!ret && opts->checkout) {
+		const char *hook = find_hook("post-checkout");
+		if (hook) {
+			const char *env[] = { "GIT_DIR", "GIT_WORK_TREE", NULL };
+			cp.git_cmd = 0;
+			cp.no_stdin = 1;
+			cp.stdout_to_stderr = 1;
+			cp.dir = path;
+			cp.env = env;
+			cp.argv = NULL;
+			argv_array_pushl(&cp.args, absolute_path(hook),
+					 oid_to_hex(&null_oid),
+					 oid_to_hex(&commit->object.oid),
+					 "1", NULL);
+			ret = run_command(&cp);
+		}
+	}
 
 	argv_array_clear(&child_env);
 	strbuf_release(&sb);
diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
index 2b95944973..d0d2e4f7ec 100755
--- a/t/t2025-worktree-add.sh
+++ b/t/t2025-worktree-add.sh
@@ -451,32 +451,68 @@ test_expect_success 'git worktree --no-guess-remote option overrides config' '
 '
 
 post_checkout_hook () {
-	test_when_finished "rm -f .git/hooks/post-checkout" &&
-	mkdir -p .git/hooks &&
-	write_script .git/hooks/post-checkout <<-\EOF
-	echo $* >hook.actual
+	gitdir=${1:-.git}
+	test_when_finished "rm -f $gitdir/hooks/post-checkout" &&
+	mkdir -p $gitdir/hooks &&
+	write_script $gitdir/hooks/post-checkout <<-\EOF
+	{
+		echo $*
+		git rev-parse --git-dir --show-toplevel
+	} >hook.actual
 	EOF
 }
 
 test_expect_success '"add" invokes post-checkout hook (branch)' '
 	post_checkout_hook &&
-	printf "%s %s 1\n" $_z40 $(git rev-parse HEAD) >hook.expect &&
+	{
+		echo $_z40 $(git rev-parse HEAD) 1 &&
+		echo $(pwd)/.git/worktrees/gumby &&
+		echo $(pwd)/gumby
+	} >hook.expect &&
 	git worktree add gumby &&
-	test_cmp hook.expect hook.actual
+	test_cmp hook.expect gumby/hook.actual
 '
 
 test_expect_success '"add" invokes post-checkout hook (detached)' '
 	post_checkout_hook &&
-	printf "%s %s 1\n" $_z40 $(git rev-parse HEAD) >hook.expect &&
+	{
+		echo $_z40 $(git rev-parse HEAD) 1 &&
+		echo $(pwd)/.git/worktrees/grumpy &&
+		echo $(pwd)/grumpy
+	} >hook.expect &&
 	git worktree add --detach grumpy &&
-	test_cmp hook.expect hook.actual
+	test_cmp hook.expect grumpy/hook.actual
 '
 
 test_expect_success '"add --no-checkout" suppresses post-checkout hook' '
 	post_checkout_hook &&
 	rm -f hook.actual &&
 	git worktree add --no-checkout gloopy &&
-	test_path_is_missing hook.actual
+	test_path_is_missing gloopy/hook.actual
+'
+
+test_expect_success '"add" in other worktree invokes post-checkout hook' '
+	post_checkout_hook &&
+	{
+		echo $_z40 $(git rev-parse HEAD) 1 &&
+		echo $(pwd)/.git/worktrees/guppy &&
+		echo $(pwd)/guppy
+	} >hook.expect &&
+	git -C gloopy worktree add --detach ../guppy &&
+	test_cmp hook.expect guppy/hook.actual
+'
+
+test_expect_success '"add" in bare repo invokes post-checkout hook' '
+	rm -rf bare &&
+	git clone --bare . bare &&
+	{
+		echo $_z40 $(git --git-dir=bare rev-parse HEAD) 1 &&
+		echo $(pwd)/bare/worktrees/goozy &&
+		echo $(pwd)/goozy
+	} >hook.expect &&
+	post_checkout_hook bare &&
+	git -C bare worktree add --detach ../goozy &&
+	test_cmp hook.expect goozy/hook.actual
 '
 
 test_done