diff --git a/codex/bridge.go b/codex/bridge.go
index 23d897f..f1d2b6e 100644
--- a/codex/bridge.go
+++ b/codex/bridge.go
@@ -4,6 +4,7 @@ package codex
    #cgo LDFLAGS: -L../vendor/nim-codex/build/ -lcodex
    #cgo LDFLAGS: -L../vendor/nim-codex/ -Wl,-rpath,../vendor/nim-codex/build
 
+   #include <stdbool.h>
    #include <stdlib.h>
    #include "../vendor/nim-codex/library/libcodex.h"