diff --git a/.gitmodules b/.gitmodules
index 5ead9be1..592920a2 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -39,3 +39,9 @@
 [submodule "pupy/pupy/external/BeRoot"]
 	path = pupy/external/BeRoot
 	url = https://github.com/AlessandroZ/BeRoot
+[submodule "client/toolchain/docker-old-tc-bootstrap"]
+	path = client/toolchain/docker-old-tc-bootstrap
+	url = https://github.com/alxchk/docker-old-tc-bootstrap
+[submodule "client/toolchain/docker-old-tc"]
+	path = client/toolchain/docker-old-tc
+	url = https://github.com/alxchk/docker-old-tc
diff --git a/client/toolchain/docker-old-tc b/client/toolchain/docker-old-tc
new file mode 160000
index 00000000..218abc23
--- /dev/null
+++ b/client/toolchain/docker-old-tc
@@ -0,0 +1 @@
+Subproject commit 218abc23b1231bba33fe272ffc1e5dbc5317078f
diff --git a/client/toolchain/docker-old-tc-bootstrap b/client/toolchain/docker-old-tc-bootstrap
new file mode 160000
index 00000000..1db3f806
--- /dev/null
+++ b/client/toolchain/docker-old-tc-bootstrap
@@ -0,0 +1 @@
+Subproject commit 1db3f806509bed7d1132831d970d772053f37b8a