diff --git a/api/CredentialsContainer.json b/api/CredentialsContainer.json
index 3248f69d086b15..fb9edd37be20a6 100644
--- a/api/CredentialsContainer.json
+++ b/api/CredentialsContainer.json
@@ -640,6 +640,58 @@
                   "deprecated": false
                 }
               }
+            },
+            "prf": {
+              "__compat": {
+                "description": "`prf` extension (pseudo-random function)",
+                "spec_url": "https://w3c.github.io/webauthn/#prf-extension",
+                "tags": [
+                  "web-features:webauthn"
+                ],
+                "support": {
+                  "chrome": {
+                    "version_added": "116"
+                  },
+                  "chrome_android": "mirror",
+                  "edge": "mirror",
+                  "firefox": [
+                    {
+                      "version_added": "139"
+                    },
+                    {
+                      "version_added": "135",
+                      "version_removed": "139",
+                      "partial_implementation": true,
+                      "notes": "Not supported on macOS."
+                    }
+                  ],
+                  "firefox_android": {
+                    "version_added": false,
+                    "impl_url": "https://bugzil.la/1958716"
+                  },
+                  "ie": {
+                    "version_added": false
+                  },
+                  "oculus": "mirror",
+                  "opera": "mirror",
+                  "opera_android": "mirror",
+                  "safari": {
+                    "version_added": false,
+                    "impl_url": "https://webkit.org/b/259934"
+                  },
+                  "safari_ios": "mirror",
+                  "samsunginternet_android": "mirror",
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
+                },
+                "status": {
+                  "experimental": false,
+                  "standard_track": true,
+                  "deprecated": false
+                }
+              }
             }
           },
           "requireResidentKey": {
@@ -1135,6 +1187,58 @@
                   "deprecated": false
                 }
               }
+            },
+            "prf": {
+              "__compat": {
+                "description": "`prf` extension (pseudo-random function)",
+                "spec_url": "https://w3c.github.io/webauthn/#prf-extension",
+                "tags": [
+                  "web-features:webauthn"
+                ],
+                "support": {
+                  "chrome": {
+                    "version_added": "116"
+                  },
+                  "chrome_android": "mirror",
+                  "edge": "mirror",
+                  "firefox": [
+                    {
+                      "version_added": "139"
+                    },
+                    {
+                      "version_added": "135",
+                      "version_removed": "139",
+                      "partial_implementation": true,
+                      "notes": "Not supported on macOS."
+                    }
+                  ],
+                  "firefox_android": {
+                    "version_added": false,
+                    "impl_url": "https://bugzil.la/1958716"
+                  },
+                  "ie": {
+                    "version_added": false
+                  },
+                  "oculus": "mirror",
+                  "opera": "mirror",
+                  "opera_android": "mirror",
+                  "safari": {
+                    "version_added": false,
+                    "impl_url": "https://webkit.org/b/259934"
+                  },
+                  "safari_ios": "mirror",
+                  "samsunginternet_android": "mirror",
+                  "webview_android": {
+                    "version_added": false
+                  },
+                  "webview_ios": "mirror"
+                },
+                "status": {
+                  "experimental": false,
+                  "standard_track": true,
+                  "deprecated": false
+                }
+              }
             }
           }
         }