diff --git a/website/src/locales/cs.json b/website/src/locales/cs.json
index f640a030..017aa554 100644
--- a/website/src/locales/cs.json
+++ b/website/src/locales/cs.json
@@ -41,6 +41,7 @@
         "distance_units": "Jednotky vzdálenosti",
         "metric": "Metrické",
         "imperial": "Imperiální",
+        "nautical": "Nautical",
         "velocity_units": "Jednotky rychlosti",
         "temperature_units": "Temperature units",
         "celsius": "Celsius",
@@ -363,12 +364,15 @@
         "feet": "stop",
         "kilometers": "km",
         "miles": "mil",
+        "nautical_miles": "nm",
         "celsius": "°C",
         "fahrenheit": "°F",
         "kilometers_per_hour": "km/h",
         "miles_per_hour": "mph",
         "minutes_per_kilometer": "min/km",
         "minutes_per_mile": "min/mi",
+        "minutes_per_nautical_mile": "min/nm",
+        "knots": "kn",
         "heartrate": "bpm",
         "cadence": "rpm",
         "power": "W"