diff --git a/.gitmodules b/.gitmodules
index 38a458a..8ccf596 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -406,3 +406,6 @@
 [submodule "broadside"]
 	path = broadside
 	url = https://github.com/nsrosenqvist/broadside
+[submodule "harmless"]
+	path = harmless
+	url = https://github.com/e4779/zola-harmless.git
diff --git a/harmless b/harmless
new file mode 160000
index 0000000..1aa77d9
--- /dev/null
+++ b/harmless
@@ -0,0 +1 @@
+Subproject commit 1aa77d9bfd88e93def8af1bf09e043502486afb3