diff --git a/api-reference/openapi.json b/api-reference/openapi.json
index 00660a51..0350642c 100644
--- a/api-reference/openapi.json
+++ b/api-reference/openapi.json
@@ -8,7 +8,7 @@
       "name": "DeepL - Contact us",
       "url": "https://www.deepl.com/contact-us"
     },
-    "version": "3.13.0"
+    "version": "3.14.0"
   },
   "externalDocs": {
     "description": "DeepL Pro - Plans and pricing",
@@ -684,7 +684,7 @@
         ],
         "summary": "Set developer key usage limits as an admin",
         "operationId": "adminSetDeveloperKeyUsageLimits",
-        "description": "Set per-key usage limits for characters and speech-to-text milliseconds. Requests made\nwith the key fail with HTTP 456 once a limit is reached. Requires an Admin API key.",
+        "description": "Set per-key usage limits for characters, speech-to-text milliseconds, and\nspeech-to-speech milliseconds. Requests made with the key fail with HTTP 456\nonce a limit is reached. Requires an Admin API key.",
         "requestBody": {
           "required": true,
           "content": {
@@ -703,6 +703,9 @@
                   },
                   "speech_to_text_milliseconds": {
                     "$ref": "#/components/schemas/ApiKeyUsageSpeechToTextMilliseconds"
+                  },
+                  "speech_to_speech_milliseconds": {
+                    "$ref": "#/components/schemas/ApiKeyUsageSpeechToSpeechMilliseconds"
                   }
                 }
               }
@@ -7146,6 +7149,11 @@
         "type": "number",
         "example": 3600000
       },
+      "ApiKeyUsageSpeechToSpeechMilliseconds": {
+        "description": "Restricts the number of milliseconds of speech-to-speech that can be consumed by an API key in a one-month usage period.\nSetting the limit to `0` means the API key will not be able to consume speech-to-speech milliseconds.\nSetting the limit to `null` disables the limit, effectively allowing unlimited usage.\n",
+        "type": "number",
+        "example": 3600000
+      },
       "ApiKey": {
         "description": "The API key.",
         "type": "object",
@@ -7180,6 +7188,9 @@
               },
               "speech_to_text_milliseconds": {
                 "$ref": "#/components/schemas/ApiKeyUsageSpeechToTextMilliseconds"
+              },
+              "speech_to_speech_milliseconds": {
+                "$ref": "#/components/schemas/ApiKeyUsageSpeechToSpeechMilliseconds"
               }
             }
           }
diff --git a/api-reference/openapi.yaml b/api-reference/openapi.yaml
index 0759ac59..ad9eed7a 100644
--- a/api-reference/openapi.yaml
+++ b/api-reference/openapi.yaml
@@ -9,7 +9,7 @@ info:
   contact:
     name: DeepL - Contact us
     url: https://www.deepl.com/contact-us
-  version: 3.13.0
+  version: 3.14.0
 externalDocs:
   description: DeepL Pro - Plans and pricing
   url: https://www.deepl.com/pro#developer
@@ -544,8 +544,9 @@ paths:
       summary: Set developer key usage limits as an admin
       operationId: adminSetDeveloperKeyUsageLimits
       description: |-
-        Set per-key usage limits for characters and speech-to-text milliseconds. Requests made
-        with the key fail with HTTP 456 once a limit is reached. Requires an Admin API key.
+        Set per-key usage limits for characters, speech-to-text milliseconds, and
+        speech-to-speech milliseconds. Requests made with the key fail with HTTP 456
+        once a limit is reached. Requires an Admin API key.
       requestBody:
         required: true
         content:
@@ -561,6 +562,8 @@ paths:
                   $ref: '#/components/schemas/ApiKeyUsageCharacters'
                 speech_to_text_milliseconds:
                   $ref: '#/components/schemas/ApiKeyUsageSpeechToTextMilliseconds'
+                speech_to_speech_milliseconds:
+                  $ref: '#/components/schemas/ApiKeyUsageSpeechToSpeechMilliseconds'
       responses:
         '200':
           description: The set usage limits function returns a JSON representation of the modified API key.
@@ -5082,6 +5085,13 @@ components:
         Setting the limit to `null` disables the limit, effectively allowing unlimited usage.
       type: number
       example: 3600000
+    ApiKeyUsageSpeechToSpeechMilliseconds:
+      description: |
+        Restricts the number of milliseconds of speech-to-speech that can be consumed by an API key in a one-month usage period.
+        Setting the limit to `0` means the API key will not be able to consume speech-to-speech milliseconds.
+        Setting the limit to `null` disables the limit, effectively allowing unlimited usage.
+      type: number
+      example: 3600000
     ApiKey:
       description: The API key.
       type: object
@@ -5110,6 +5120,8 @@ components:
               $ref: '#/components/schemas/ApiKeyUsageCharacters'
             speech_to_text_milliseconds:
               $ref: '#/components/schemas/ApiKeyUsageSpeechToTextMilliseconds'
+            speech_to_speech_milliseconds:
+              $ref: '#/components/schemas/ApiKeyUsageSpeechToSpeechMilliseconds'
     ConfiguredRules:
       description: The enabled rules for the style rule list including what option
         was selected for each rule. This schema combines rules from all supported
diff --git a/docs/admin/quickstart.mdx b/docs/admin/quickstart.mdx
index c4657461..b7f51531 100644
--- a/docs/admin/quickstart.mdx
+++ b/docs/admin/quickstart.mdx
@@ -59,7 +59,8 @@ You'll receive an array with one object per developer key, active and deactivate
     "is_deactivated": false,
     "usage_limits": {
       "characters": null,
-      "speech_to_text_milliseconds": null
+      "speech_to_text_milliseconds": null,
+      "speech_to_speech_milliseconds": null
     }
   }
 ]
@@ -91,7 +92,8 @@ The response returns the newly created key object:
   "is_deactivated": false,
   "usage_limits": {
     "characters": null,
-    "speech_to_text_milliseconds": null
+    "speech_to_text_milliseconds": null,
+    "speech_to_speech_milliseconds": null
   }
 }
 ```
@@ -126,7 +128,8 @@ The response returns the updated key object. Confirm that `usage_limits.characte
   "is_deactivated": false,
   "usage_limits": {
     "characters": 500000,
-    "speech_to_text_milliseconds": null
+    "speech_to_text_milliseconds": null,
+    "speech_to_speech_milliseconds": null
   }
 }
 ```