diff --git a/dev-libs/yyjson/files/yyjson-0.7.0-fix-clang-16-valgrind.patch b/dev-libs/yyjson/files/yyjson-0.7.0-fix-clang-16-valgrind.patch
new file mode 100644
index 0000000000000..33a1ceee5a262
--- /dev/null
+++ b/dev-libs/yyjson/files/yyjson-0.7.0-fix-clang-16-valgrind.patch
@@ -0,0 +1,24 @@
+https://github.com/ibireme/yyjson/commit/841a8c5603a1e393d95300a55b44ebc324497e82
+
+From: ibireme <ibireme@gmail.com>
+Date: Mon, 14 Aug 2023 21:33:31 +0800
+Subject: [PATCH] Fix clang-16 valgrind fail: #134
+
+--- a/src/yyjson.c
++++ b/src/yyjson.c
+@@ -2670,6 +2670,7 @@ yyjson_mut_val *yyjson_merge_patch(yyjson_mut_doc *doc,
+     builder = yyjson_mut_obj(doc);
+     if (unlikely(!builder)) return NULL;
+     
++    memset(&local_orig, 0, sizeof(local_orig));
+     if (!yyjson_is_obj(orig)) {
+         orig = &local_orig;
+         orig->tag = builder->tag;
+@@ -2721,6 +2722,7 @@ yyjson_mut_val *yyjson_mut_merge_patch(yyjson_mut_doc *doc,
+     builder = yyjson_mut_obj(doc);
+     if (unlikely(!builder)) return NULL;
+     
++    memset(&local_orig, 0, sizeof(local_orig));
+     if (!yyjson_mut_is_obj(orig)) {
+         orig = &local_orig;
+         orig->tag = builder->tag;
diff --git a/dev-libs/yyjson/yyjson-0.7.0.ebuild b/dev-libs/yyjson/yyjson-0.7.0-r1.ebuild
similarity index 82%
rename from dev-libs/yyjson/yyjson-0.7.0.ebuild
rename to dev-libs/yyjson/yyjson-0.7.0-r1.ebuild
index 30376e8e222a3..506382b3e617f 100644
--- a/dev-libs/yyjson/yyjson-0.7.0.ebuild
+++ b/dev-libs/yyjson/yyjson-0.7.0-r1.ebuild
@@ -19,15 +19,17 @@ RESTRICT="!test? ( test )"
 
 BDEPEND="doc? ( app-doc/doxygen )"
 
-PATCHES=( "${FILESDIR}"/${PN}-0.7.0-disable-werror.patch )
+PATCHES=(
+	"${FILESDIR}"/${PN}-0.7.0-disable-werror.patch
+	"${FILESDIR}"/${PN}-0.7.0-fix-clang-16-valgrind.patch
+)
 
 src_configure() {
 	local mycmakeargs=(
 		-DYYJSON_BUILD_DOC=$(usex doc)
 		-DYYJSON_BUILD_TESTS=$(usex test)
+		-DYYJSON_ENABLE_VALGRIND=$(usex test)
 	)
-	# TODO: -DYYJSON_ENABLE_VALGRIND=$(usex test)
-	# https://github.com/ibireme/yyjson/issues/134
 
 	cmake_src_configure
 }