diff --git a/bitcoin/src/blockdata/transaction.rs b/bitcoin/src/blockdata/transaction.rs
index d1a2753fe..071009808 100644
--- a/bitcoin/src/blockdata/transaction.rs
+++ b/bitcoin/src/blockdata/transaction.rs
@@ -946,6 +946,8 @@ impl Version {
     pub const TWO: Self = Self(2);
 }
 
+mod tmp {
+use super::*;
 impl Version {
     /// Creates a non-standard transaction version.
     pub fn non_standard(version: i32) -> Version { Self(version) }
@@ -953,6 +955,7 @@ impl Version {
     /// Returns true if this transaction version number is considered standard.
     pub fn is_standard(&self) -> bool { *self == Version::ONE || *self == Version::TWO }
 }
+}
 
 impl Encodable for Version {
     fn consensus_encode<W: Write + ?Sized>(&self, w: &mut W) -> Result<usize, io::Error> {