diff --git a/.github/workflows/js-prs-issue.yml b/.github/workflows/js-prs-issue.yml
index 35756a9..6639198 100644
--- a/.github/workflows/js-prs-issue.yml
+++ b/.github/workflows/js-prs-issue.yml
@@ -24,8 +24,7 @@ jobs:
           ALERTS_LIST=''
 
           # Get list of supported modules
-          # Assumes CMS 5 is the most recent stable version
-          curl -s -o __modules.json https://raw.githubusercontent.com/silverstripe/supported-modules/5/modules.json
+          curl -s -o __modules.json https://raw.githubusercontent.com/silverstripe/supported-modules/main/repositories.json
           # If we can't parse the JSON at all, $MODULES will be an empty string and that means we couldn't fetch the file.
           MODULES=$(jq -e '.' __modules.json) || true
           if [[ $MODULES == "" ]]; then
@@ -35,37 +34,37 @@ jobs:
             # Instead of exiting, output an error instead of the dependabot alert list.
             # We don't have any reporting indicating if this workflow fails, so this is a good way to track that.
             ALERTS_LIST='Failed to parse supported-modules JSON. Please check the GitHub action log.'
-          fi
+          else
+            # Create a list of markdown links for supported module dependabot stuff
+            ALERTS_LIST=$(php -r '
+              $json = json_decode(file_get_contents("__modules.json"), true);
+              foreach ($json["supportedModules"] as $module) {
+                # Assumes CMS 5 is the most recent stable version
+                if (!isset($module["majorVersionMapping"]["5"])) {
+                  continue;
+                }
+                $githubRef = $module["github"];
+                $branch = end($module["majorVersionMapping"]["5"]);
+                $packageJsonURL = "https://raw.githubusercontent.com/$githubRef/$branch/package.json";
+                $headers = get_headers($packageJsonURL);
+                # $headers[0] includes the response code in a format like: "HTTP/1.1 404 Not Found"
+                $response = $headers[0];
+                # Skip modules which do not have a package.json file
+                if (strpos($response, "404") !== false) {
+                  continue;
+                }
+                # If we have something other than 404 (above) or 200, output an error string for the list
+                # and move on.
+                if (strpos($response, "200") === false) {
+                  echo "- $githubRef: Unable to check package.json, response was $response.\\n";
+                  continue;
+                }
 
-          # Create a list of markdown links for supported module dependabot stuff
-          ALERTS_LIST=$(php -r '
-            $json = json_decode(file_get_contents("__modules.json"), true);
-            foreach ($json as $module) {
-              # Skip non-github modules, if any listed
-              if (!$module["github"]) {
-                continue;
-              }
-              $githubRef = $module["github"];
-              $branch = end($module["branches"]);
-              $packageJsonURL = "https://raw.githubusercontent.com/$githubRef/$branch/package.json";
-              $headers = get_headers($packageJsonURL);
-              # $headers[0] includes the response code in a format like: "HTTP/1.1 404 Not Found"
-              $response = $headers[0];
-              # Skip modules which do not have a package.json file
-              if (strpos($response, "404") !== false) {
-                continue;
-              }
-              # If we have something other than 404 (above) or 200, output an error string for the list
-              # and move on.
-              if (strpos($response, "200") === false) {
-                echo "- $githubRef: Unable to check package.json, response was $response.\\n";
-                continue;
+                # If we get here, we have a package.json file so we should add a dependabot alerts URL to the list
+                echo "- [$githubRef](https://github.com/$githubRef/security/dependabot)\\n";
               }
-
-              # If we get here, we have a package.json file so we should add a dependabot alerts URL to the list
-              echo "- [$githubRef](https://github.com/$githubRef/security/dependabot)\\n";
-            }
-          ')
+            ')
+          fi
           
           echo 'ALERTS_LIST is:'
           echo $ALERTS_LIST