diff --git a/packages/addons/service/ttyd/package.mk b/packages/addons/service/ttyd/package.mk
index f1139dd3d2..4cf9f3a38f 100644
--- a/packages/addons/service/ttyd/package.mk
+++ b/packages/addons/service/ttyd/package.mk
@@ -9,7 +9,7 @@ PKG_ARCH="any"
 PKG_LICENSE="MIT"
 PKG_SITE="https://github.com/tsl0922/ttyd"
 PKG_URL="https://github.com/tsl0922/ttyd/archive/${PKG_VERSION}.tar.gz"
-PKG_DEPENDS_TARGET="toolchain libwebsockets"
+PKG_DEPENDS_TARGET="toolchain libwebsockets zlib"
 PKG_SECTION="service"
 PKG_SHORTDESC="ttyd: a tool for accessing the terminal over a browser"
 PKG_LONGDESC="ttyd (${PKG_VERSION}): is a simple command-line tool for sharing terminal over the web"