diff --git a/substrate/primitives/authority-discovery/Cargo.toml b/substrate/primitives/authority-discovery/Cargo.toml
index eae1f35891..6621a2ad5a 100644
--- a/substrate/primitives/authority-discovery/Cargo.toml
+++ b/substrate/primitives/authority-discovery/Cargo.toml
@@ -30,3 +30,8 @@ std = [
 	"sp-runtime/std",
 	"sp-std/std",
 ]
+serde = [
+	"scale-info/serde",
+	"sp-application-crypto/serde",
+	"sp-runtime/serde",
+]
diff --git a/substrate/primitives/statement-store/Cargo.toml b/substrate/primitives/statement-store/Cargo.toml
index 352ee94d3a..8293212d6f 100644
--- a/substrate/primitives/statement-store/Cargo.toml
+++ b/substrate/primitives/statement-store/Cargo.toml
@@ -39,3 +39,9 @@ std = [
 	"thiserror",
 	"log",
 ]
+serde = [
+        "scale-info/serde",
+        "sp-application-crypto/serde",
+        "sp-core/serde",
+        "sp-runtime/serde",
+]