diff --git a/theme.toml b/theme.toml
index 6185172..b22bb60 100644
--- a/theme.toml
+++ b/theme.toml
@@ -8,7 +8,7 @@ description = "Hugo documentation theme as simple as plain book"
 homepage = "https://github.com/alex-shpak/hugo-book"
 tags = ["responsive", "clean", "documentation", "docs", "flexbox"]
 features = []
-min_version = "0.41"
+min_version = "0.43"
 
 [author]
   name = "Alex Shpak"