diff --git a/.gitmodules b/.gitmodules
index b637c571b09025c051da04477935daf18ca2615e..108c126449e421fe360ec4d04b4d1c631e71942b 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -10,3 +10,7 @@
 	path = ttcn/LibIts
 	url = ../../LIBS/LibIts.git
 	branch = v1.3.1
+[submodule "TS102868-3_v1.3.1_ttcn/LibCommon"]
+	path = ttcn/LibCommon
+	url = ../../LIBS/LibCommon.git
+	branch = v1.4.0
diff --git a/ttcn/LibCommon b/ttcn/LibCommon
new file mode 160000
index 0000000000000000000000000000000000000000..1c35e012cb65152abd1ab432a82d23a755c1276e
--- /dev/null
+++ b/ttcn/LibCommon
@@ -0,0 +1 @@
+Subproject commit 1c35e012cb65152abd1ab432a82d23a755c1276e