diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc1930df18..b4dfffb300 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,9 +13,9 @@ ENHANCEMENTS:
 * Added 'availableUpgrades' field to Resources in GET/GET all Resources endpoints. The field indicates whether there are template versions that a resource can be upgraded to [#3234](https://github.com/microsoft/AzureTRE/pull/3234)
 * Update Porter (1.0.11), Docker (23.0.3), Terraform (1.4.5) ([#3430](https://github.com/microsoft/AzureTRE/issues/3430))
 
-
 BUG FIXES:
 * Fix ENABLE_SWAGGER configuration being ignored in CI ([#3355](https://github.com/microsoft/AzureTRE/pull/3355))
+* Set yq output format when reading a json file ([#3441](https://github.com/microsoft/AzureTRE/pull/3441))
 
 COMPONENTS:
 
@@ -71,7 +71,6 @@ BUG FIXES:
 * Remove auth private endpoint from databricks workspace service ([3199](https://github.com/microsoft/AzureTRE/pull/3199))
 * Fix DNS conflict in airlock-review workspace that could make the entire airlock module inoperable ([#3215](https://github.com/microsoft/AzureTRE/pull/3215))
 
-
 COMPONENTS:
 
 | name | version |
diff --git a/devops/scripts/load_and_validate_env.sh b/devops/scripts/load_and_validate_env.sh
index 6fedde377b..32c4df3763 100755
--- a/devops/scripts/load_and_validate_env.sh
+++ b/devops/scripts/load_and_validate_env.sh
@@ -33,7 +33,7 @@ else
     fi
 
     # Get any default entries from config schema and export. Any values in config.yaml will override these defaults
-    DEFAULT_VALUES=$(yq '[... |select(has("default"))| {"":path | .[-1] | upcase , " ": .default }| to_entries| map("=" +  .value)|join("")  ]'  config_schema.json)
+    DEFAULT_VALUES=$(yq '[... |select(has("default"))| {"":path | .[-1] | upcase , " ": .default }| to_entries| map("=" +  .value)|join("")  ]' --output-format=yaml config_schema.json)
     # Format env string
     DEFAULT_VALUES=${DEFAULT_VALUES//"- ="}