diff --git a/0001-Fix-prototype-warnings.patch b/0001-Fix-prototype-warnings.patch
new file mode 100644
index 0000000000000000000000000000000000000000..16195890ab80d1cb3f51070bf50961e048cbe128
--- /dev/null
+++ b/0001-Fix-prototype-warnings.patch
@@ -0,0 +1,38 @@
+From 7c9abd06f57275d109d6b22a577c7c80dd007543 Mon Sep 17 00:00:00 2001
+From: jammyjellyfish <jammyjellyfish255@outlook.com>
+Date: Wed, 19 Apr 2023 15:55:06 +0800
+Subject: [PATCH] Fix prototype warnings
+
+The flag -Wdeprecated-non-prototype is enabled by
+default in Clang 15. This patch try to fix compile
+error when building with Clang 15(and gcc with
+-Wstrict-prototypes flag.)
+---
+ src/libopensc/card-openpgp.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/src/libopensc/card-openpgp.c b/src/libopensc/card-openpgp.c
+index fad32f0..ea1d874 100644
+--- a/src/libopensc/card-openpgp.c
++++ b/src/libopensc/card-openpgp.c
+@@ -129,7 +129,7 @@ static pgp_ec_curves_t	ec_curves_gnuk[] = {
+ 
+ static int		pgp_get_card_features(sc_card_t *card);
+ static int		pgp_finish(sc_card_t *card);
+-static void		pgp_iterate_blobs(pgp_blob_t *, void (*func)());
++static void		pgp_iterate_blobs(pgp_blob_t *blob, void (*func)(pgp_blob_t *));
+ 
+ static int		pgp_get_blob(sc_card_t *card, pgp_blob_t *blob,
+ 				 unsigned int id, pgp_blob_t **ret);
+@@ -1150,7 +1150,7 @@ pgp_free_blob(pgp_blob_t *blob)
+  * Internal: iterate through the blob tree, calling a function for each blob.
+  */
+ static void
+-pgp_iterate_blobs(pgp_blob_t *blob, void (*func)())
++pgp_iterate_blobs(pgp_blob_t *blob, void (*func)(pgp_blob_t *))
+ {
+ 	if (blob) {
+ 		pgp_blob_t *child = blob->files;
+-- 
+2.40.0
+
diff --git a/opensc.spec b/opensc.spec
index b30bda0c7f2ea92f3af29325a556cfa5295da062..d57c959c944b20c2251f3e0a745df75a4594ae0f 100644
--- a/opensc.spec
+++ b/opensc.spec
@@ -3,7 +3,7 @@
 
 Name:            opensc
 Version:         0.23.0
-Release:         1
+Release:         2
 License:         LGPL-2.1-or-later
 Summary:         Smart card library and applications
 URL:             https://github.com/OpenSC/OpenSC/wiki
@@ -139,6 +139,9 @@ make check
 %{_datadir}/opensc/
 
 %changelog
+* Thu May 4 2023 jammyjellyfish <jammyjellyfish255@outlook.com> - 0.23.0-2
+- fix prototype warning
+
 * Wed Feb 1 2023 wangjunqi <wangjunqi@kylinos.cn> - 0.23.0-1
 - update version to 0.23.0