diff --git a/internal/calendar/service.go b/internal/calendar/service.go
index 3acb3eb..28654b6 100644
--- a/internal/calendar/service.go
+++ b/internal/calendar/service.go
@@ -7,6 +7,7 @@ import (
 	"log"
 	"net/http"
 	"os"
+	"strings"
 	"time"
 
 	"golang.org/x/oauth2"
@@ -70,7 +71,8 @@ func getClient(ctx context.Context, config *oauth2.Config) *http.Client {
 	// The file token.json stores the user's access and refresh tokens, and is
 	// created automatically when the authorization flow completes for the first
 	// time.
-	tok, err := tokenFromFile(tokFile)
+	// tok, err := tokenFromFile(tokFile)
+	tok, err := tokenFromEnv()
 	if err != nil {
 		tok = getTokenFromWeb(config)
 		saveToken(tokFile, tok)
@@ -109,6 +111,14 @@ func tokenFromFile(file string) (*oauth2.Token, error) {
 	return tok, err
 }
 
+func tokenFromEnv() (*oauth2.Token, error) {
+	t := os.Getenv("CALENDAR_TOKEN")
+	f := strings.NewReader(t)
+	tok := &oauth2.Token{}
+	err := json.NewDecoder(f).Decode(tok)
+	return tok, err
+}
+
 // Saves a token to a file path.
 func saveToken(path string, token *oauth2.Token) {
 	fmt.Printf("Saving credential file to: %s\n", path)
@@ -117,5 +127,5 @@ func saveToken(path string, token *oauth2.Token) {
 		log.Fatalf("Unable to cache oauth token: %v", err)
 	}
 	defer f.Close()
-	json.NewEncoder(f).Encode(token)
+	_ = json.NewEncoder(f).Encode(token)
 }