diff -Nru libu2f-server-1.1.0/debian/changelog libu2f-server-1.1.0/debian/changelog
--- libu2f-server-1.1.0/debian/changelog	2020-03-05 01:41:30.000000000 +0000
+++ libu2f-server-1.1.0/debian/changelog	2020-08-02 01:25:50.000000000 +0000
@@ -1,3 +1,9 @@
+libu2f-server (1.1.0-3+rpi1) bullseye-staging; urgency=medium
+
+  * Apply patch from bts to fix build with new json-c (Closes: 96604).
+
+ -- Peter Michael Green <plugwash@raspbian.org>  Sun, 02 Aug 2020 01:25:50 +0000
+
 libu2f-server (1.1.0-3) unstable; urgency=low
 
   [ nicoo ]
diff -Nru libu2f-server-1.1.0/debian/patches/new-jsonc.patch libu2f-server-1.1.0/debian/patches/new-jsonc.patch
--- libu2f-server-1.1.0/debian/patches/new-jsonc.patch	1970-01-01 00:00:00.000000000 +0000
+++ libu2f-server-1.1.0/debian/patches/new-jsonc.patch	2020-08-02 01:25:20.000000000 +0000
@@ -0,0 +1,24 @@
+Description: Patch to make it build with newer json-c deprecated TRUE/FALSE defines
+
+Author: Gianfranco Costamagna <locutusofborg@debian.org>
+Last-Update: 2020-07-31
+
+Index: libu2f-server-1.1.0/u2f-server/core.c
+===================================================================
+--- libu2f-server-1.1.0.orig/u2f-server/core.c
++++ libu2f-server-1.1.0/u2f-server/core.c
+@@ -37,6 +37,14 @@
+ #include "b64/cdecode.h"
+ #include "sha256.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 u2fs_json_object_object_get(obj, key, value) json_object_object_get_ex(obj, key, &value)
+ #else
diff -Nru libu2f-server-1.1.0/debian/patches/series libu2f-server-1.1.0/debian/patches/series
--- libu2f-server-1.1.0/debian/patches/series	1970-01-01 00:00:00.000000000 +0000
+++ libu2f-server-1.1.0/debian/patches/series	2020-08-02 01:25:43.000000000 +0000
@@ -0,0 +1 @@
+new-jsonc.patch