diff --git a/.gitmodules b/.gitmodules
index 6a0e1a99a54876a66561dd2cca0ffcc2c6d04568..f88a08c93aa07cd2639bb17d8e02f58a06e2cfb0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,6 +1,3 @@
-[submodule "expansion_subsystem_tech"]
-	path = expansion_subsystem_tech
-	url = https://git.soton.ac.uk/soclabs/expansion_subsystem_tech.git
 [submodule "megasoc_tech"]
 	path = megasoc_tech
 	url = https://git.soton.ac.uk/soclabs/megasoc_tech.git
diff --git a/expansion_subsystem_tech b/expansion_subsystem_tech
deleted file mode 160000
index ab50b35afe69d2166aa6ed6309b5fa33338dab5a..0000000000000000000000000000000000000000
--- a/expansion_subsystem_tech
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit ab50b35afe69d2166aa6ed6309b5fa33338dab5a
diff --git a/projbranch b/projbranch
index 5852ecc0a4d47de9014d11c004ad8104a52aa079..a940d277aa8b4d98718349b1e5a0ecfa6fe53b5b 100644
--- a/projbranch
+++ b/projbranch
@@ -13,5 +13,4 @@
 # Add your Accelerator Repository here
 
 megasoc_tech: main
-expansion_subsystem_tech: main
 soctools_flow: main