diff --git a/lib/util/template/index.ts b/lib/util/template/index.ts
index b70864e22fef20..f5d99f4c9cf7f4 100644
--- a/lib/util/template/index.ts
+++ b/lib/util/template/index.ts
@@ -88,6 +88,8 @@ export const allowedFields = {
   depNameSanitized:
     'The depName field sanitized for use in branches after removing spaces and special characters',
   depType: 'The dependency type (if extracted - manager-dependent)',
+  depTypes:
+    'A deduplicated array of dependency types (if extracted - manager-dependent) in a branch',
   displayFrom: 'The current value, formatted for display',
   displayPending: 'Latest pending update, if internalChecksFilter is in use',
   displayTo: 'The to value, formatted for display',
diff --git a/lib/workers/repository/updates/generate.spec.ts b/lib/workers/repository/updates/generate.spec.ts
index db94dcbf3c7531..184cb508139164 100644
--- a/lib/workers/repository/updates/generate.spec.ts
+++ b/lib/workers/repository/updates/generate.spec.ts
@@ -1443,5 +1443,30 @@ describe('workers/repository/updates/generate', () => {
       const res = generateBranchConfig(upgrades);
       expect(res.additionalReviewers).toEqual(['foo', 'bar']);
     });
+
+    it('merges depTypes', () => {
+      const upgrades = [
+        {
+          ...requiredDefaultOptions,
+          branchName: 'some-branch',
+          manager: 'some-manager',
+          depType: 'devDependencies',
+        },
+        {
+          ...requiredDefaultOptions,
+          branchName: 'some-branch',
+          manager: 'some-manager',
+          depType: 'dependencies',
+        },
+        {
+          ...requiredDefaultOptions,
+          branchName: 'some-branch',
+          manager: 'some-manager',
+          depType: 'devDependencies',
+        },
+      ] satisfies BranchUpgradeConfig[];
+      const res = generateBranchConfig(upgrades);
+      expect(res.depTypes).toEqual(['dependencies', 'devDependencies']);
+    });
   });
 });
diff --git a/lib/workers/repository/updates/generate.ts b/lib/workers/repository/updates/generate.ts
index d8ba25c27a5305..3712d2adad8c08 100644
--- a/lib/workers/repository/updates/generate.ts
+++ b/lib/workers/repository/updates/generate.ts
@@ -83,6 +83,7 @@ export function generateBranchConfig(
   const newValue: string[] = [];
   const toVersions: string[] = [];
   const toValues = new Set<string>();
+  const depTypes = new Set<string>();
   for (const upg of branchUpgrades) {
     upg.recreateClosed = upg.recreateWhen === 'always';
 
@@ -119,6 +120,9 @@ export function generateBranchConfig(
       toVersions.push(upg.newVersion!);
     }
     toValues.add(upg.newValue!);
+    if (upg.depType) {
+      depTypes.add(upg.depType);
+    }
     // prettify newVersion and newMajor for printing
     if (upg.newVersion) {
       upg.prettyNewVersion = prettifyVersion(upg.newVersion);
@@ -425,5 +429,8 @@ export function generateBranchConfig(
   if (additionalReviewers.length > 0) {
     config.additionalReviewers = additionalReviewers;
   }
+  if (depTypes.size) {
+    config.depTypes = Array.from(depTypes).sort();
+  }
   return config;
 }