diff --git a/README.md b/README.md
index 5667a46..cacc0e5 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,7 @@ install-php-extensions --cleanup gd xdebug
 | gd | V | V | V | V | V |
 | gettext | V | V | V | V | V |
 | gmp | V | V | V | V | V |
+| igbinary | V | V | V | V | V |
 | imagick | V | V | V | V | V |
 | imap | V | V | V | V | V |
 | interbase | V | V | V | V | V |