diff --git a/contrib/test.sh b/contrib/test.sh
index 58b5bfc302..f5c1dd41c9 100755
--- a/contrib/test.sh
+++ b/contrib/test.sh
@@ -20,7 +20,7 @@ if cargo --version | grep ${MSRV}; then
     # memcrh 2.6.0 uses edition 2021
     cargo update -p memchr --precise 2.5.0
 
-    cargo update -p groestlcoin:0.30.1 --precise 0.30.0
+    cargo update -p groestlcoin:0.30.0 --precise 0.30.0
 
     # Build MSRV with pinned versions.
     cargo check --all-features --all-targets