diff --git a/deepgram/prerecorded.go b/deepgram/prerecorded.go
index 802459d4..35ae64f5 100644
--- a/deepgram/prerecorded.go
+++ b/deepgram/prerecorded.go
@@ -51,6 +51,7 @@ type PreRecordedTranscriptionOptions struct {
 	Utterances         bool        `json:"utterances" url:"utterances,omitempty" `
 	Utt_split          float64     `json:"utt_split" url:"utt_split,omitempty" `
 	Version            string      `json:"version" url:"version,omitempty" `
+	FillerWords      string   `json:"filler_words" url:"filler_words,omitempty" `
 }
 
 type PreRecordedResponse struct {
diff --git a/deepgram/transcriptions.go b/deepgram/transcriptions.go
index 84ca1d9f..0f077681 100644
--- a/deepgram/transcriptions.go
+++ b/deepgram/transcriptions.go
@@ -41,6 +41,7 @@ type LiveTranscriptionOptions struct {
 	Times            bool     `json:"times" url:"times,omitempty" `
 	Vad_turnoff      int      `json:"vad_turnoff" url:"vad_turnoff,omitempty" `
 	Version          string   `json:"version" url:"version,omitempty" `
+	FillerWords      string   `json:"filler_words" url:"filler_words,omitempty" `
 }
 
 func (dg *Client) LiveTranscription(options LiveTranscriptionOptions) (*websocket.Conn, *http.Response, error) {