diff --git a/_labs/lab05.md b/_labs/lab04.md
similarity index 99%
rename from _labs/lab05.md
rename to _labs/lab04.md
index 1a730f6..516a1a1 100644
--- a/_labs/lab05.md
+++ b/_labs/lab04.md
@@ -1,5 +1,5 @@
 ---
-num: lab05
+num: lab04
 ready: true
 desc: "Array lists and dynamic arrays"
 assigned: 2023-02-23 13:00