-LTTng-UST depends on [liburcu](http://liburcu.org/) v0.7.2 at build and
-run times. It also depends on libnuma.
+LTTng-UST depends on **[liburcu](http://liburcu.org/) >= 0.12** at build and
+run times. It also optionally depends on libnuma.
Since LTTng-UST 2.3, both tracepoints and tracepoint providers can be
compiled in C++. To compile tracepoint probes in C++, you need
Since LTTng-UST 2.3, both tracepoints and tracepoint providers can be
compiled in C++. To compile tracepoint probes in C++, you need