diff --git a/cmd/heartbeat/heartbeat.go b/cmd/heartbeat/heartbeat.go
index 5e450c21..08a7367d 100644
--- a/cmd/heartbeat/heartbeat.go
+++ b/cmd/heartbeat/heartbeat.go
@@ -17,6 +17,7 @@ import (
 	"github.com/wakatime/wakatime-cli/pkg/filter"
 	"github.com/wakatime/wakatime-cli/pkg/heartbeat"
 	"github.com/wakatime/wakatime-cli/pkg/language"
+	_ "github.com/wakatime/wakatime-cli/pkg/lexer" // force to load all lexers
 	"github.com/wakatime/wakatime-cli/pkg/log"
 	"github.com/wakatime/wakatime-cli/pkg/offline"
 	"github.com/wakatime/wakatime-cli/pkg/project"