diff --git a/src/pkcs1v15.rs b/src/pkcs1v15.rs
index 4600aeb4..aa572c5e 100644
--- a/src/pkcs1v15.rs
+++ b/src/pkcs1v15.rs
@@ -222,7 +222,7 @@ mod oid {
     use const_oid::ObjectIdentifier;
 
     /// A trait which associates an RSA-specific OID with a type.
-    pub(crate) trait RsaSignatureAssociatedOid {
+    pub trait RsaSignatureAssociatedOid {
         /// The OID associated with this type.
         const OID: ObjectIdentifier;
     }
@@ -258,6 +258,8 @@ mod oid {
     }
 }
 
+pub use oid::RsaSignatureAssociatedOid;
+
 #[cfg(test)]
 mod tests {
     use super::*;