diff --git a/utils/ykpers/Makefile b/utils/ykpers/Makefile
index bc8b284c8d..7c2261c5e0 100644
--- a/utils/ykpers/Makefile
+++ b/utils/ykpers/Makefile
@@ -2,7 +2,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=ykpers
 PKG_VERSION:=1.20.0
-PKG_RELEASE:=2
+PKG_RELEASE:=3
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://developers.yubico.com/yubikey-personalization/Releases
@@ -12,6 +12,9 @@ PKG_MAINTAINER:=Stuart B. Wilkins <stuwilkins@mac.com>
 PKG_LICENSE:=BSD-2-Clause
 PKG_LICENSE_FILES:=COPYING
 
+PKG_INSTALL:=1
+PKG_BUILD_PARALLEL:=1
+
 include $(INCLUDE_DIR)/package.mk
 
 define Package/ykpers
@@ -32,20 +35,21 @@ CONFIGURE_ARGS += \
 	--disable-static
 
 define Build/InstallDev
-	$(INSTALL_DIR) $(STAGING_DIR)/usr/include
-	$(CP) $(PKG_BUILD_DIR)/ykcore/*.h $(STAGING_DIR)/usr/include
-	$(CP) $(PKG_BUILD_DIR)/*.h $(STAGING_DIR)/usr/include
+	$(INSTALL_DIR) $(STAGING_DIR)/usr/include/ykpers-1
+	$(CP) $(PKG_INSTALL_DIR)/usr/include/ykpers-1/*.h $(STAGING_DIR)/usr/include/ykpers-1
 	$(INSTALL_DIR) $(STAGING_DIR)/usr/lib
-	$(CP) $(PKG_BUILD_DIR)/.libs/libykpers-1.so* $(STAGING_DIR)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libykpers-1.so* $(STAGING_DIR)/usr/lib
+	$(INSTALL_DIR) $(STAGING_DIR)/usr/lib/pkgconfig
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/pkgconfig/ykpers-1.pc $(STAGING_DIR)/usr/lib/pkgconfig
 endef
 
 define Package/ykpers/install
 	$(INSTALL_DIR) $(1)/usr/bin
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/.libs/ykchalresp $(1)/usr/bin/
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/.libs/ykinfo $(1)/usr/bin/
-	$(INSTALL_BIN) $(PKG_BUILD_DIR)/.libs/ykpersonalize $(1)/usr/bin/
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/ykchalresp $(1)/usr/bin/
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/ykinfo $(1)/usr/bin/
+	$(INSTALL_BIN) $(PKG_INSTALL_DIR)/usr/bin/ykpersonalize $(1)/usr/bin/
 	$(INSTALL_DIR) $(1)/usr/lib
-	$(CP) $(PKG_BUILD_DIR)/.libs/libykpers-1.so* $(1)/usr/lib
+	$(CP) $(PKG_INSTALL_DIR)/usr/lib/libykpers-1.so* $(1)/usr/lib
 endef
 
 $(eval $(call BuildPackage,ykpers))
diff --git a/utils/ykpers/patches/020-json-c-0.14.patch b/utils/ykpers/patches/020-json-c-0.14.patch
new file mode 100644
index 0000000000..ca5a918d21
--- /dev/null
+++ b/utils/ykpers/patches/020-json-c-0.14.patch
@@ -0,0 +1,83 @@
+From 0aa2e2cae2e1777863993a10c809bb50f4cde7f8 Mon Sep 17 00:00:00 2001
+From: Christian Hesse <mail@eworm.de>
+Date: Sat, 25 Apr 2020 20:55:28 +0200
+Subject: [PATCH] fix boolean value with json-c 0.14
+
+Upstream removed the TRUE and FALSE defines in commit
+0992aac61f8b087efd7094e9ac2b84fa9c040fcd.
+---
+ ykpers-json.c | 18 +++++++++---------
+ 1 file changed, 9 insertions(+), 9 deletions(-)
+
+diff --git a/ykpers-json.c b/ykpers-json.c
+index a62e907..15ad380 100644
+--- a/ykpers-json.c
++++ b/ykpers-json.c
+@@ -40,7 +40,7 @@
+ #define yk_json_object_object_get(obj, key, value) json_object_object_get_ex(obj, key, &value)
+ #else
+ typedef int json_bool;
+-#define yk_json_object_object_get(obj, key, value) (value = json_object_object_get(obj, key)) == NULL ? (json_bool)FALSE : (json_bool)TRUE
++#define yk_json_object_object_get(obj, key, value) (value = json_object_object_get(obj, key)) == NULL ? 0 : 1
+ #endif
+ 
+ static void set_json_value(struct map_st *p, int mode, json_object *options, YKP_CONFIG *cfg) {
+@@ -50,7 +50,7 @@ static void set_json_value(struct map_st *p, int mode, json_object *options, YKP
+ 	if(p->mode && (mode & p->mode) == mode) {
+ 		json_object *joption;
+ 		json_bool ret = yk_json_object_object_get(options, p->json_text, joption);
+-		if(ret == TRUE && json_object_get_type(joption) == json_type_boolean) {
++		if(ret == 1 && json_object_get_type(joption) == json_type_boolean) {
+ 			int value = json_object_get_boolean(joption);
+ 			if(value == 1) {
+ 				p->setter(cfg, true);
+@@ -230,20 +230,20 @@ int _ykp_json_import_cfg(YKP_CONFIG *cfg, const char *json, size_t len) {
+ 			ykp_errno = YKP_EINVAL;
+ 			goto out;
+ 		}
+-		if(yk_json_object_object_get(jobj, "yubiProdConfig", yprod_json) == FALSE) {
++		if(yk_json_object_object_get(jobj, "yubiProdConfig", yprod_json) == 0) {
+ 			ykp_errno = YKP_EINVAL;
+ 			goto out;
+ 		}
+-		if(yk_json_object_object_get(yprod_json, "mode", jmode) == FALSE) {
++		if(yk_json_object_object_get(yprod_json, "mode", jmode) == 0) {
+ 			ykp_errno = YKP_EINVAL;
+ 			goto out;
+ 		}
+-		if(yk_json_object_object_get(yprod_json, "options", options) == FALSE) {
++		if(yk_json_object_object_get(yprod_json, "options", options) == 0) {
+ 			ykp_errno = YKP_EINVAL;
+ 			goto out;
+ 		}
+ 
+-		if(yk_json_object_object_get(yprod_json, "targetConfig", jtarget) == TRUE) {
++		if(yk_json_object_object_get(yprod_json, "targetConfig", jtarget) == 1) {
+ 			int target_config = json_object_get_int(jtarget);
+ 			int command;
+ 			if(target_config == 1) {
+@@ -275,13 +275,13 @@ int _ykp_json_import_cfg(YKP_CONFIG *cfg, const char *json, size_t len) {
+ 		if(mode == MODE_OATH_HOTP) {
+ 			json_object *jdigits, *jrandom;
+ 			ykp_set_tktflag_OATH_HOTP(cfg, true);
+-			if(yk_json_object_object_get(options, "oathDigits", jdigits) == TRUE) {
++			if(yk_json_object_object_get(options, "oathDigits", jdigits) == 1) {
+ 				int digits = json_object_get_int(jdigits);
+ 				if(digits == 8) {
+ 					ykp_set_cfgflag_OATH_HOTP8(cfg, true);
+ 				}
+ 			}
+-			if(yk_json_object_object_get(options, "randomSeed", jrandom) == TRUE) {
++			if(yk_json_object_object_get(options, "randomSeed", jrandom) == 1) {
+ 				int random = json_object_get_boolean(jrandom);
+ 				int seed = 0;
+ 				if(random == 1) {
+@@ -290,7 +290,7 @@ int _ykp_json_import_cfg(YKP_CONFIG *cfg, const char *json, size_t len) {
+ 					goto out;
+ 				} else {
+ 					json_object *jseed;
+-					if(yk_json_object_object_get(options, "fixedSeedvalue", jseed) == TRUE) {
++					if(yk_json_object_object_get(options, "fixedSeedvalue", jseed) == 1) {
+ 						seed = json_object_get_int(jseed);
+ 					}
+ 				}