diff -Nru yubikey-personalization-1.20.0/debian/changelog yubikey-personalization-1.20.0/debian/changelog
--- yubikey-personalization-1.20.0/debian/changelog	2020-01-31 03:05:11.000000000 +0000
+++ yubikey-personalization-1.20.0/debian/changelog	2020-08-02 09:16:03.000000000 +0000
@@ -1,3 +1,9 @@
+yubikey-personalization (1.20.0-2+rpi1) bullseye-staging; urgency=medium
+
+  * Apply patch from BTS to fix build with new json-c (Closes: 966606)
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Sun, 02 Aug 2020 09:16:03 +0000
+
 yubikey-personalization (1.20.0-2) unstable; urgency=medium
 
   * Fix install location for AppStream metadata (Closes: #943591)
diff -Nru yubikey-personalization-1.20.0/debian/patches/new-jsonc.patch yubikey-personalization-1.20.0/debian/patches/new-jsonc.patch
--- yubikey-personalization-1.20.0/debian/patches/new-jsonc.patch	1970-01-01 00:00:00.000000000 +0000
+++ yubikey-personalization-1.20.0/debian/patches/new-jsonc.patch	2020-08-02 09:15:38.000000000 +0000
@@ -0,0 +1,19 @@
+Index: yubikey-personalization-1.20.0/ykpers-json.c
+===================================================================
+--- yubikey-personalization-1.20.0.orig/ykpers-json.c
++++ yubikey-personalization-1.20.0/ykpers-json.c
+@@ -36,6 +36,14 @@
+ #include <json.h>
+ #include <string.h>
+
++// not exported anymore by new json-c
++#ifndef TRUE
++#define TRUE 1
++#endif
++#ifndef FALSE
++#define FALSE 0
++#endif
++
+ #ifdef HAVE_JSON_OBJECT_OBJECT_GET_EX
+ #define yk_json_object_object_get(obj, key, value) json_object_object_get_ex(obj, key, &value)
+ #else
diff -Nru yubikey-personalization-1.20.0/debian/patches/series yubikey-personalization-1.20.0/debian/patches/series
--- yubikey-personalization-1.20.0/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ yubikey-personalization-1.20.0/debian/patches/series	2020-08-02 09:15:51.000000000 +0000
@@ -0,0 +1 @@
+new-jsonc.patch