diff --git a/CMakeLists.txt b/CMakeLists.txt
index 932f7894..855a35f9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -40,6 +40,9 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
     message(STATUS "Using PROCPS -> ${PROCPS_MODULE_NAME} v${PROCPS_VERSION}")
     if (PROCPS_VERSION VERSION_GREATER_EQUAL 4.0.0)
         add_definitions("-DUSING_LIBPROC2")
+        if (PROCPS_VERSION VERSION_GREATER_EQUAL 4.0.5)
+            add_definitions("-DUSING_LIBPROC2_1")
+        endif()
     endif()
 endif()
 
diff --git a/lxqt-session/src/procreaper.cpp b/lxqt-session/src/procreaper.cpp
index ea614530..8069c606 100644
--- a/lxqt-session/src/procreaper.cpp
+++ b/lxqt-session/src/procreaper.cpp
@@ -121,10 +121,18 @@ void ProcReaper::stop(const std::set<int64_t> & excludedPids)
     pids_stack * stack = nullptr;
     while ((stack = procps_pids_get(info, PIDS_FETCH_TASKS_ONLY)))
     {
+# if defined(USING_LIBPROC2_1)
+        const int ppid = PIDS_VAL(rel_ppid, s_int, stack);
+# else
         const int ppid = PIDS_VAL(rel_ppid, s_int, stack, info);
+# endif
         if (ppid == my_pid)
         {
+# if defined(USING_LIBPROC2_1)
+            const int tgid = PIDS_VAL(rel_tgid, s_int, stack);
+# else
             const int tgid = PIDS_VAL(rel_tgid, s_int, stack, info);
+# endif
             children.push_back(tgid);
         }
     }