diff --git a/homeassistant/components/alexa/capabilities.py b/homeassistant/components/alexa/capabilities.py
index ea8a1ed8681..0182d2aa085 100644
--- a/homeassistant/components/alexa/capabilities.py
+++ b/homeassistant/components/alexa/capabilities.py
@@ -695,6 +695,7 @@ class AlexaSpeaker(AlexaCapability):
         "en-US",
         "es-ES",
         "es-MX",
+        "fr-FR",  # Not documented as of 2021-12-04, see PR #60489
         "it-IT",
         "ja-JP",
     }
@@ -752,6 +753,7 @@ class AlexaStepSpeaker(AlexaCapability):
         "en-IN",
         "en-US",
         "es-ES",
+        "fr-FR",  # Not documented as of 2021-12-04, see PR #60489
         "it-IT",
     }