diff --git a/CHANGELOG.md b/CHANGELOG.md
index c90ebf2b..f1b65b67 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 ## [4.0.0] - 2018-09-30
 ### Changed
 - Pull latest localization from Transifex
-- Update readme with Thunderbird version compatibility
+- Set maximum version restriction to Thunderbird 59
 
 ## [4.0.0-beta5] - 2018-01-28
 ### Added
diff --git a/install.rdf.template b/install.rdf.template
index 78ebc2fb..ee349008 100644
--- a/install.rdf.template
+++ b/install.rdf.template
@@ -9,7 +9,7 @@
                 <!-- Thunderbird -->
                 <em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
                 <em:minVersion>52.0.0</em:minVersion>
-                <em:maxVersion>52.*.*</em:maxVersion>
+                <em:maxVersion>59.*.*</em:maxVersion>
             </Description>
         </em:targetApplication>
         <em:targetApplication>