diff --git a/README.md b/README.md
index d753ebf..456d7ec 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ The waves were collectec over the following dates:
 * Wave 3: 2025-01-08 - 2025-01-22
 * Wave 4: 2025-03-05 - 2025-03-19
 * Wave 5: 2025-05-07 - 2025-05-20
-* Wave 6: 2025-07-02 - 2026-07-18
+* Wave 6: 2025-07-02 - 2025-07-18
 
 ## ChatGPT versions during data collection