diff --git a/.gitmodules b/.gitmodules
index 8b13789..ec64030 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1 +1,7 @@
 
+[submodule "secure-debug/psa-adac"]
+	path = secure-debug/psa-adac
+	url = https://git.trustedfirmware.org/shared/psa-adac.git
+[submodule "secure-debug/external/mbedtls"]
+	path = secure-debug/external/mbedtls
+	url = https://github.com/Mbed-TLS/mbedtls.git
diff --git a/secure-debug/external/mbedtls b/secure-debug/external/mbedtls
new file mode 160000
index 0000000..265ce7c
--- /dev/null
+++ b/secure-debug/external/mbedtls
@@ -0,0 +1 @@
+Subproject commit 265ce7c1da775e2e57ce93984fba3d86c4c6a1ea
diff --git a/secure-debug/psa-adac b/secure-debug/psa-adac
new file mode 160000
index 0000000..4c35930
--- /dev/null
+++ b/secure-debug/psa-adac
@@ -0,0 +1 @@
+Subproject commit 4c35930fb6df95400ea4fe5722acaaa594ac3b8b