diff --git a/scripts/build_standalone_packages.sh b/scripts/build_standalone_packages.sh
index 468607676..f9eba1687 100755
--- a/scripts/build_standalone_packages.sh
+++ b/scripts/build_standalone_packages.sh
@@ -5,7 +5,7 @@ set -e
 mkdir -p build
 cd build
 
-PACT_STANDALONE_VERSION=1.4.2
+PACT_STANDALONE_VERSION=1.20.0
 urls=(https://github.com/pact-foundation/pact-ruby-standalone/releases/download/v$PACT_STANDALONE_VERSION/pact-$PACT_STANDALONE_VERSION-linux-x86.tar.gz https://github.com/pact-foundation/pact-ruby-standalone/releases/download/v$PACT_STANDALONE_VERSION/pact-$PACT_STANDALONE_VERSION-linux-x86_64.tar.gz https://github.com/pact-foundation/pact-ruby-standalone/releases/download/v$PACT_STANDALONE_VERSION/pact-$PACT_STANDALONE_VERSION-osx.tar.gz https://github.com/pact-foundation/pact-ruby-standalone/releases/download/v$PACT_STANDALONE_VERSION/pact-$PACT_STANDALONE_VERSION-win32.zip)
 
 # Provider Verifier