diff --git a/2021-07-13.md b/2021-07-13.md
index 3c19e1203..ef6246580 100644
--- a/2021-07-13.md
+++ b/2021-07-13.md
@@ -1,2 +1,4 @@
 - [[cheap calculator]]
-- [[edsger dijkstra]]
\ No newline at end of file
+- [[edsger dijkstra]]
+- [[stpa]]
+	- [[stpa workshop]]
\ No newline at end of file
diff --git a/stpa.md b/stpa.md
new file mode 100644
index 000000000..36cebdcae
--- /dev/null
+++ b/stpa.md
@@ -0,0 +1,3 @@
+- [[pull]] [[system theoretic process analysis]]
+- [[pull]] [[stpa handbook]]
+- [[pull]] [[stpa workshop]]
\ No newline at end of file