diff --git a/.gitmodules b/.gitmodules
index 7c5a517259..02849ec9bd 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -71,3 +71,6 @@
 [submodule "lib/alif_ensemble-cmsis-dfp"]
 	path = lib/alif_ensemble-cmsis-dfp
 	url = https://github.com/alifsemi/alif_ensemble-cmsis-dfp.git
+[submodule "lib/alif-security-toolkit"]
+	path = lib/alif-security-toolkit
+	url = https://github.com/micropython/alif-security-toolkit.git
diff --git a/lib/alif-security-toolkit b/lib/alif-security-toolkit
new file mode 160000
index 0000000000..63698efe85
--- /dev/null
+++ b/lib/alif-security-toolkit
@@ -0,0 +1 @@
+Subproject commit 63698efe8567eed115fe620d5e5de75f460310d7