diff --git a/ALL_VERSIONS b/ALL_VERSIONS
index 067ee6966c301fb5ed23c32d0e33abe709038f27..0d98b133fbd3666344798215bdcc8aa5f9077db4 100644
--- a/ALL_VERSIONS
+++ b/ALL_VERSIONS
@@ -1,6 +1,6 @@
 Version number			Date of release		Notes
 ==============			===============		=====
-19.1 (Potassium)                2019, August 30         OCaml 4.08 compatibility
+19.1 (Potassium)                2019, September 18      OCaml 4.08 compatibility
 19.0 (Potassium)                2019, June 21
 18.0 (Argon)                    2018, November 29
 Chlorine-20180502               2018, July 06           Bug fixed