diff --git a/.github/workflows/packaging-test-pipelines.yml b/.github/workflows/packaging-test-pipelines.yml
index 29023a700..8690fce1f 100644
--- a/.github/workflows/packaging-test-pipelines.yml
+++ b/.github/workflows/packaging-test-pipelines.yml
@@ -25,9 +25,10 @@ jobs:
         id: get-postgres-versions
         run: |
           set -euxo pipefail
-          # Postgres versions are stored in .github/workflows/build_and_test.yml file in "pg[pg-version]_version"
-          # format. Below command extracts the versions and get the unique values.
-          pg_versions=$(cat .github/workflows/build_and_test.yml | grep -oE 'pg[0-9]+_version: '\''{ "major": "[0-9]+", "full": "[0-9.]+"' | sed -E 's/pg([0-9]+)_version: "([0-9.]+)"/\1/g' | sort | uniq | tr '\n', ',')
+          # Postgres versions are stored in .github/workflows/build_and_test.yml
+          # file in json strings with major and full keys.
+          # Below command extracts the versions and get the unique values.
+          pg_versions=$(cat .github/workflows/build_and_test.yml | grep -oE '"major": "[0-9]+", "full": "[0-9.]+"' | sed -E 's/"major": "([0-9]+)", "full": "([0-9.]+)"/\1/g' | sort | uniq | tr '\n', ',')
           pg_versions_array="[ ${pg_versions} ]"
           echo "Supported PG Versions: ${pg_versions_array}"
           # Below line is needed to set the output variable to be used in the next job