diff --git a/mkosi.conf b/mkosi.conf
index a987d66..0cd9286 100644
--- a/mkosi.conf
+++ b/mkosi.conf
@@ -39,6 +39,7 @@ Packages=
     i2c-tools
     impeller
     libgpiod-utils
+    libpdfium
     mechanix-extension-service
     mechanix-files
     mechanix-fonts