@xkaraman looks like simila change we need for `jsonrpcc` module ``` cd /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build/src/modules/json && /usr/bin/cmake -E cmake_link_script CMakeFiles/json.dir/link.txt --verbose=1 /usr/bin/gcc -fPIC -O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64-v2 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -DNDEBUG -m64 -Wl,-z,relro -Wl,--as-needed -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -shared -Wl,-soname,json.so -o json.so CMakeFiles/json.dir/json_funcs.c.o CMakeFiles/json.dir/json_mod.c.o CMakeFiles/json.dir/json_trans.c.o -Wl,-rpath,::::::::::::::::::: /usr/lib64/libjson-c.so -ldl -lresolv In file included from /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/src/modules/jsonrpcc/jsonrpc.c:32: /root/rpmbuild/BUILD/kamailio-6.1.0-dev0/src/modules/jsonrpcc/jsonrpc.h:32:10: fatal error: json.h: No such file or directory 32 | #include <json.h> | ^~~~~~~~ compilation terminated. gmake[2]: *** [src/modules/jsonrpcc/CMakeFiles/jsonrpcc.dir/build.make:79: src/modules/jsonrpcc/CMakeFiles/jsonrpcc.dir/jsonrpc.c.o] Error 1 gmake[2]: Leaving directory '/root/rpmbuild/BUILD/kamailio-6.1.0-dev0/redhat-linux-build' gmake[1]: *** [CMakeFiles/Makefile2:35969: src/modules/jsonrpcc/CMakeFiles/jsonrpcc.dir/all] Error 2 gmake[1]: *** Waiting for unfinished jobs.... ```