diff --git a/platform/mv3/extension/_locales/cs/messages.json b/platform/mv3/extension/_locales/cs/messages.json
index 585475287..3de9ca455 100644
--- a/platform/mv3/extension/_locales/cs/messages.json
+++ b/platform/mv3/extension/_locales/cs/messages.json
@@ -232,11 +232,11 @@
     "description": "Label for a checkbox in the options page"
   },
   "enableStrictBlockLabel": {
-    "message": "Enable strict blocking",
+    "message": "Povolit přísné blokování",
     "description": "Label for a checkbox in the options page"
   },
   "enableStrictBlockLegend": {
-    "message": "Navigation to potentially undesirable sites will be blocked, and you will be offered the option to proceed.",
+    "message": "Navigace na potenciálně nežádoucí stránky bude zablokována a bude vám nabídnuta možnost pokračovat.",
     "description": "Label for a checkbox in the options page"
   },
   "findListsPlaceholder": {
@@ -244,39 +244,39 @@
     "description": "Placeholder for the input field used to find lists"
   },
   "strictblockTitle": {
-    "message": "Page blocked",
+    "message": "Stránka zablokována",
     "description": "Webpage title for the strict-blocked page"
   },
   "strictblockSentence1": {
-    "message": "uBO Lite has prevented the following page from loading:",
+    "message": "uBO Lite zabránil načtení následující stránky:",
     "description": "Sentence used in the strict-blocked page"
   },
   "strictblockReasonSentence1": {
-    "message": "The page was blocked because of a matching filter in {{listname}}.",
+    "message": "Stránka byla zablokována z důvodu shodného filtru v {{listname}}.",
     "description": "Text informing about what is causing the page to be blocked"
   },
   "strictblockRedirectSentence1": {
-    "message": "The blocked page wants to redirect to another site. If you choose to proceed, you will navigate directly to: {{url}}",
+    "message": "Zablokovaná stránka vás chce přesměrovat na jiný web. Pokud se rozhodnete pokračovat, přejdete přímo na: {{url}}",
     "description": "Text warning about an incoming redirect"
   },
   "strictblockNoParamsPrompt": {
-    "message": "without parameters",
+    "message": "bez parametrů",
     "description": "Label to be used for the parameter-less URL"
   },
   "strictblockBack": {
-    "message": "Go back",
+    "message": "Zpět",
     "description": "A button to go back to the previous webpage"
   },
   "strictblockClose": {
-    "message": "Close this window",
+    "message": "Zavřít toto okno",
     "description": "A button to close the current tab"
   },
   "strictblockDontWarn": {
-    "message": "Don't warn me again about this site",
+    "message": "Nevarujte mě znovu o této stránce",
     "description": "Label for checkbox in document-blocked page"
   },
   "strictblockProceed": {
-    "message": "Proceed",
+    "message": "Pokračovat",
     "description": "A button to navigate to the blocked page"
   }
 }