diff --git a/README.md b/README.md
index 12fbe32..7766b82 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 # Requirements
 ### Minimal versions
 - python 3.7
-- postgresql 11
+- postgresql 12
 
 ### Database schema
 includes GIN index column `geodata_search_idx`