diff --git a/.gitmodules b/.gitmodules
index 6ff8b0d..6ca0bcb 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,7 @@
 [submodule "tools/url-editor"]
 	path = tools/url-editor
 	url = https://git.reim.ar/Reimar/url-editor
+
+[submodule "tools/cpr-nummer"]
+	path = tools/cpr-nummer
+	url = https://git.reim.ar/Reimar/cpr-nummer
diff --git a/tools/cpr-nummer b/tools/cpr-nummer
new file mode 160000
index 0000000..50fac57
--- /dev/null
+++ b/tools/cpr-nummer
@@ -0,0 +1 @@
+Subproject commit 50fac57116765df8a8470a1e6e57785e20e1ebe2