diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..8536aa8
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,3 @@
+module github.com/yext/gettext
+
+go 1.18
diff --git a/po/plural.go b/po/plural.go
index 6344624..b246798 100644
--- a/po/plural.go
+++ b/po/plural.go
@@ -51,6 +51,9 @@ var langNames = map[string]string{
 	"is":    "Icelandic",
 	"id":    "Indonesian",
 	"bs":    "Bosnian",
+	"sm":    "Samoan",
+	"to":    "Tongan",
+	"fil":   "Filipino",
 }
 
 // TODO: Fall back to these if Plural-Forms is not specified.
@@ -100,6 +103,9 @@ var pluralExprs = map[string]string{
 	"sl":    "nplurals=4; plural=(n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3);",
 	"ar":    "nplurals=6; plural=(n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 ? 4 : 5);",
 	"is":    "nplurals=2; plural=(n%10!=1 || n%100==11);",
+	"sm":    "nplurals=2; plural=(n > 1);",
+	"to":    "nplurals=3; plural=n==1 ? 0 : n==2 ? 1 : 2;",
+	"fil":   "nplurals=2; plural=(n > 1);",
 }
 
 // pluralSelectors contains a lookup from space-stripped plural forms strings to