diff --git a/gen-tz.py b/gen-tz.py
index 8c820cd..8e71798 100755
--- a/gen-tz.py
+++ b/gen-tz.py
@@ -154,6 +154,7 @@
     "America/Moncton",
     "America/Monterrey",
     "America/Montevideo",
+    "America/Montreal",
     "America/Montserrat",
     "America/Nassau",
     "America/New_York",
diff --git a/zones.csv b/zones.csv
index 6bfbb41..c6e8a8b 100644
--- a/zones.csv
+++ b/zones.csv
@@ -148,6 +148,7 @@
 "America/Moncton","AST4ADT,M3.2.0,M11.1.0"
 "America/Monterrey","CST6CDT,M4.1.0,M10.5.0"
 "America/Montevideo","<-03>3"
+"America/Montreal","EST5EDT,M3.2.0,M11.1.0"
 "America/Montserrat","AST4"
 "America/Nassau","EST5EDT,M3.2.0,M11.1.0"
 "America/New_York","EST5EDT,M3.2.0,M11.1.0"
diff --git a/zones.json b/zones.json
index 41a8e26..5b4d9a4 100644
--- a/zones.json
+++ b/zones.json
@@ -149,6 +149,7 @@
 "America/Moncton":"AST4ADT,M3.2.0,M11.1.0",
 "America/Monterrey":"CST6CDT,M4.1.0,M10.5.0",
 "America/Montevideo":"<-03>3",
+"America/Montreal":"EST5EDT,M3.2.0,M11.1.0",
 "America/Montserrat":"AST4",
 "America/Nassau":"EST5EDT,M3.2.0,M11.1.0",
 "America/New_York":"EST5EDT,M3.2.0,M11.1.0",