diff --git a/script/release/next-docker-tag.sh b/script/release/next-docker-tag.sh
index 082d58c..6a307f1 100755
--- a/script/release/next-docker-tag.sh
+++ b/script/release/next-docker-tag.sh
@@ -2,7 +2,7 @@ set -e
 source script/functions
 gem_version=$(gem_version_from_gemfile_lock)
 DOCKER_IMAGE="pactfoundation/pact-broker"
-existing_tags=$(wget -q https://registry.hub.docker.com/v1/repositories/${DOCKER_IMAGE}/tags -O - | jq -r .[].name )
+existing_tags=$(wget -q https://registry.hub.docker.com/v1/repositories/${DOCKER_IMAGE}/tags -O - | jq -r .[].name | sed 's/-[0-9]$/.1/g')
 existing_release_numbers_for_current_gem_version=$(echo "$existing_tags" | grep "${gem_version}\." | sed 's/'${gem_version}'\.//g' | grep -E "^[0-9]+$" | cat)
 
 if [ -n "${existing_release_numbers_for_current_gem_version}" ]; then