diff --git a/system-test/abi-testcases/mixed-validator-test.sh b/system-test/abi-testcases/mixed-validator-test.sh
index a49eefa840..8ab673b26a 100755
--- a/system-test/abi-testcases/mixed-validator-test.sh
+++ b/system-test/abi-testcases/mixed-validator-test.sh
@@ -13,7 +13,7 @@ ledgerDir="$PWD"/config
 rm -rf "$ledgerDir" "$logDir"
 mkdir -p "$logDir"
 
-baselineVersion=1.0.14  # <-- oldest version we remain compatible with
+baselineVersion=1.1.18  # <-- oldest version we remain compatible with
 otherVersions=(
   beta
   edge