diff --git a/egui_demo_lib/Cargo.toml b/egui_demo_lib/Cargo.toml
index d6382b6c..8be86b95 100644
--- a/egui_demo_lib/Cargo.toml
+++ b/egui_demo_lib/Cargo.toml
@@ -15,7 +15,7 @@ include = [ "**/*.rs", "Cargo.toml"]
 [lib]
 
 [dependencies]
-egui = { version = "0.6.0", path = "../egui" }
+egui = { version = "0.6.0", path = "../egui", features = ["serde"] }
 epi = { version = "0.6.0", path = "../epi", features = ["serde", "serde_json"] }
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"