diff --git a/platform/firefox/install.rdf b/platform/firefox/install.rdf
index ce2324150..c9b9320f8 100644
--- a/platform/firefox/install.rdf
+++ b/platform/firefox/install.rdf
@@ -21,7 +21,7 @@
{{ec8030f7-c20a-464f-9b0e-13a3a9e97384}}
24.0
- 56.*
+ 57.0a1
@@ -30,7 +30,7 @@
{{aa3c5121-dab2-40e2-81ca-7ea25febc110}}
27.0
- *
+ 57.0a1
diff --git a/platform/webext/install.rdf b/platform/webext/install.rdf
index 9b4c5b50a..f4f3be3f0 100644
--- a/platform/webext/install.rdf
+++ b/platform/webext/install.rdf
@@ -21,7 +21,7 @@
{{ec8030f7-c20a-464f-9b0e-13a3a9e97384}}
54.0
- *
+ 57.0a1
@@ -29,8 +29,8 @@
{{aa3c5121-dab2-40e2-81ca-7ea25febc110}}
- 56.0a1
- *
+ 54.0
+ 57.0a1