diff --git a/Cargo.toml b/Cargo.toml
index d0d0845..fa65041 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -55,3 +55,4 @@ required-features = ["std"]
 
 [[example]]
 name = "v2-separate-creator-constructor"
+required-features = ["std"]
diff --git a/src/v2/map/input.rs b/src/v2/map/input.rs
index 0a7cc74..05c7e6c 100644
--- a/src/v2/map/input.rs
+++ b/src/v2/map/input.rs
@@ -839,6 +839,7 @@ mod test {
         // assert_eq!(back.taproot_hash_ty(), Err(InvalidSighashTypeError(nonstd)));
     }
 
+    #[cfg(feature = "std")]
     fn out_point() -> OutPoint {
         let txid = Txid::hash(b"some arbitrary bytes");
         let vout = 0xab;
@@ -846,6 +847,7 @@ mod test {
     }
 
     #[test]
+    #[cfg(feature = "std")]
     fn serialize_roundtrip() {
         let input = Input::new(out_point());
 
diff --git a/src/v2/map/output.rs b/src/v2/map/output.rs
index d15c16d..b15423f 100644
--- a/src/v2/map/output.rs
+++ b/src/v2/map/output.rs
@@ -346,6 +346,7 @@ impl From<serialize::Error> for InsertPairError {
 }
 
 #[cfg(test)]
+#[cfg(feature = "std")]
 mod tests {
     use super::*;