diff --git a/Cargo.toml b/Cargo.toml
index 25020b7111..8cebd0d606 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -41,7 +41,7 @@ core2 = { version = "0.3.0", optional = true, default-features = false }
 
 base64-compat = { version = "1.0.0", optional = true }
 bitcoinconsensus = { version = "0.19.0-3", optional = true }
-serde = { version = "1", features = [ "derive" ], optional = true }
+serde = { version = "1", default-features = false, features = [ "derive" ], optional = true }
 hashbrown = { version = "0.8", optional = true }
 
 [dev-dependencies]
diff --git a/contrib/test.sh b/contrib/test.sh
index 676e26bb86..7e4f90d4f3 100755
--- a/contrib/test.sh
+++ b/contrib/test.sh
@@ -81,6 +81,8 @@ then
     cargo new dep_test
     cd dep_test
     echo 'bitcoin = { path = "..", features = ["use-serde"] }' >> Cargo.toml
+    echo 'serde = { version = "1" }' >> Cargo.toml
+
 
     cargo test --verbose
 fi