diff --git a/other-really-tricky-bits.md b/other-really-tricky-bits.md
index 07caadf..fec72ed 100644
--- a/other-really-tricky-bits.md
+++ b/other-really-tricky-bits.md
@@ -1,2 +1,3 @@
+* [[parallelism]]
 * [[sysout and sysin]]
 * [[stack]]