diff --git a/internal/utils/isocodes.go b/internal/utils/isocodes.go
new file mode 100644
index 0000000..3bdfbeb
--- /dev/null
+++ b/internal/utils/isocodes.go
@@ -0,0 +1,11 @@
+package utils
+
+var isoCodes = map[string]bool{
+	"eng": true, // English
+	"swa": true, // Swahili
+
+}
+
+func IsValidISO639(code string) bool {
+	return isoCodes[code]
+}