diff --git a/.gitmodules b/.gitmodules
index 01e49bd1..8a8e7bd8 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -264,3 +264,6 @@
 [submodule "repos/ModularFungi"]
 	path = repos/ModularFungi
 	url = https://github.com/david-c14/ModularFungi.git
+[submodule "repos/STS"]
+	path = repos/STS
+	url = https://github.com/SmallTownSound/STS.git
diff --git a/manifests/STS.json b/manifests/STS.json
new file mode 100644
index 00000000..17844bf9
--- /dev/null
+++ b/manifests/STS.json
@@ -0,0 +1,8 @@
+{
+  "name": "STS",
+  "author": "Don Turnrock",
+  "license": "BSD-3-Clause",
+  "sourceUrl": "https://github.com/SmallTownSound/STS.git",
+  "manualUrl": "https://github.com/SmallTownSound/STS/blob/master/README.md",
+  "repoVersion": "0.6.0.1"
+}
diff --git a/repos/STS b/repos/STS
new file mode 160000
index 00000000..edea8d0b
--- /dev/null
+++ b/repos/STS
@@ -0,0 +1 @@
+Subproject commit edea8d0bb50c8e823f602bb2e2ec3f86faa2533b