diff --git a/README.md b/README.md
index 50b19c0..2477dab 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ This plugin allows for adding customer appointment capability to the Redmine cal
 
 | Plugin Version | Redmine Version | Parent Plugin Version |
 | --- | --- | --- |
-| 2026.8.0+ | 7.0.x | 2026.3.9+ |
+| 2026.8.0+ | 7.0.x | 2026.8.0+ |
 
 ---
 
diff --git a/init.rb b/init.rb
index 1ea23ff..0a42800 100644
--- a/init.rb
+++ b/init.rb
@@ -22,7 +22,7 @@ Redmine::Plugin.register :redmine_qbo_calendar do
 
   # Ensure redmine_qbo is installed
   begin
-    requires_redmine_plugin :redmine_qbo, version_or_higher: '2026.3.9'
+    requires_redmine_plugin :redmine_qbo, version_or_higher: '2026.8.0'
   rescue Redmine::PluginNotFound
     raise 'Please install the redmine_qbo plugin (https://github.com/rickbarrette/redmine_qbo)'
   end