diff --git a/README.md b/README.md
index 5b6f1df..79677be 100644
--- a/README.md
+++ b/README.md
@@ -30,7 +30,7 @@
- 2018: PCB prototype, first real installation,
- 2019: 2-layer PCB, through-hole components, integrated buttons and display,
- 2019: controller redesigned taking into account development and operating experience, 2-layer PCB, SMD,
-- 2019-2021: installations, development, tests, revisions, redesigns,
+- 2019-2021: installations, development, tests, revisions, redesigns,
- 06 Feb 2021: product is technically completed and ready for public access. Documentation and release stage.
## Get your own PCB copy. Assembly.