diff --git a/hashes/extended_tests/schemars/README.md b/hashes/extended_tests/schemars/README.md
index d8ff3278..38c4c139 100644
--- a/hashes/extended_tests/schemars/README.md
+++ b/hashes/extended_tests/schemars/README.md
@@ -4,7 +4,6 @@ Run as usual with `cargo test`.
 
 ## Minimum Supported Rust Version (MSRV)
 
-To run the tests with the MSRV you will need to pin some dependencies:
+To run the tests with the MSRV you will need to pin `serde`:
 
 - `cargo update -p serde --precise 1.0.156`
-- `cargo update -p syn --precise 1.0.107`