diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..9c1bb94
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.xpi
+.DS_Store
diff --git a/install.rdf b/install.rdf
index 689a843..0cad09b 100644
--- a/install.rdf
+++ b/install.rdf
@@ -29,7 +29,7 @@
 			<Description>
 				<em:id>{3550f703-e582-4d05-9a08-453d09bdfdc6}</em:id>
 				<em:minVersion>3.0.*</em:minVersion>
-				<em:maxVersion>40.*</em:maxVersion>
+				<em:maxVersion>45.*</em:maxVersion>
 			</Description>
 		</em:targetApplication>