diff --git a/src/locales/el-GR.json b/src/locales/el-GR.json
new file mode 100644
index 00000000..d2d110b3
--- /dev/null
+++ b/src/locales/el-GR.json
@@ -0,0 +1,30 @@
+{
+  "todayButton": "Σήμερα",
+  "nextMonth": "Επόμενος μήνας",
+  "previousMonth": "Προηγούμενος μήνας",
+  "nextYear": "Επόμενος χρόνος",
+  "previousYear": "Προηγούμενος χρόνος",
+  "weekdays": [
+    "Κυριακή",
+    "Δευτέρα",
+    "Τρίτη",
+    "Τετάρτη",
+    "Πέμπτη",
+    "Παρασκευή",
+    "Σάββατο"
+  ],
+  "months": [
+    "Ιανουάριος",
+    "Φεβρουάριος",
+    "Μάρτιος",
+    "Απρίλιος",
+    "Μάιος",
+    "Ιούνιος",
+    "Ιούλιος",
+    "Αύγουστος",
+    "Σεπτέμβριος",
+    "Οκτώβριος",
+    "Νοέμβριος",
+    "Δεκέμβριος"
+  ]
+}
diff --git a/src/locales/ro-RO.json b/src/locales/ro-RO.json
new file mode 100644
index 00000000..251d3e90
--- /dev/null
+++ b/src/locales/ro-RO.json
@@ -0,0 +1,30 @@
+{
+  "todayButton": "Astăzi",
+  "nextMonth": "Luna următoare",
+  "previousMonth": "Luna anterioară",
+  "nextYear": "Anul următor",
+  "previousYear": "Anul anterior",
+  "zilele săptămânii": [
+    "Duminică",
+    "Luni",
+    "Marți",
+    "Miercuri",
+    "Joi",
+    "Vineri",
+    "Sâmbătă"
+  ],
+  "luni": [
+    "Ianuarie",
+    "Februarie",
+    "Martie",
+    "Aprilie",
+    "Mai",
+    "Iunie",
+    "Iulie",
+    "August",
+    "Septembrie",
+    "Octombrie",
+    "Noiembrie",
+    "Decembrie"
+  ]
+}
diff --git a/src/types/index.ts b/src/types/index.ts
index 8013b90b..641648b3 100644
--- a/src/types/index.ts
+++ b/src/types/index.ts
@@ -19,6 +19,7 @@ export type LocaleOptions =
   | 'ca-ES'
   | 'cs-CZ'
   | 'de-DE'
+  | 'el-GR'
   | 'en-US'
   | 'es-ES'
   | 'et-EE'
@@ -32,6 +33,7 @@ export type LocaleOptions =
   | 'nn-NO'
   | 'pl-PL'
   | 'pt-BR'
+  | 'ro-RO'
   | 'ru-RU'
   | 'sv-SE'
   | 'tr-TR'
diff --git a/stories/data.ts b/stories/data.ts
index be7ae5d7..13a0ed92 100644
--- a/stories/data.ts
+++ b/stories/data.ts
@@ -8,6 +8,7 @@ const locale = <const>[
   'ca-ES',
   'cs-CZ',
   'de-DE',
+  'el-GR',
   'en-US',
   'es-ES',
   'et-EE',
@@ -21,6 +22,7 @@ const locale = <const>[
   'nn-NO',
   'pl-PL',
   'pt-BR',
+  'ro-RO',
   'ru-RU',
   'sv-SE',
   'tr-TR',