diff --git a/lib/workers/repository/process/__snapshots__/fetch.spec.ts.snap b/lib/workers/repository/process/__snapshots__/fetch.spec.ts.snap
index 50e2e373af26d36952d73e7ba5105a39617bdd6a..b866c67a21bb046c1837b95cbd6aa40ee4cdf149 100644
--- a/lib/workers/repository/process/__snapshots__/fetch.spec.ts.snap
+++ b/lib/workers/repository/process/__snapshots__/fetch.spec.ts.snap
@@ -5,7 +5,8 @@ exports[`workers/repository/process/fetch fetchUpdates() fetches updates 1`] = `
   "maven": [
     {
       "constraints": {
-        "some": "constraint",
+        "other": "constraint",
+        "some": "different",
       },
       "deps": [
         {
diff --git a/lib/workers/repository/process/fetch.spec.ts b/lib/workers/repository/process/fetch.spec.ts
index 6b033fd1ba4a0cad55a3f5601fd1158092601ded..101d80ee1e96697df592a0588d3a5b193dc2d33e 100644
--- a/lib/workers/repository/process/fetch.spec.ts
+++ b/lib/workers/repository/process/fetch.spec.ts
@@ -58,11 +58,12 @@ describe('workers/repository/process/fetch', () => {
 
     it('fetches updates', async () => {
       config.rangeStrategy = 'auto';
+      config.constraints = { some: 'different' };
       const packageFiles: any = {
         maven: [
           {
             packageFile: 'pom.xml',
-            extractedConstraints: { some: 'constraint' },
+            extractedConstraints: { some: 'constraint', other: 'constraint' },
             deps: [{ datasource: MavenDatasource.id, depName: 'bbb' }],
           },
         ],
diff --git a/lib/workers/repository/process/fetch.ts b/lib/workers/repository/process/fetch.ts
index 38dc52b314be76749744c3ac527a137a164ffbe2..badf45d48bff41801c28d3d01c80bfb9c2796e03 100644
--- a/lib/workers/repository/process/fetch.ts
+++ b/lib/workers/repository/process/fetch.ts
@@ -98,6 +98,7 @@ async function fetchManagerPackagerFileUpdates(
   if (pFile.extractedConstraints) {
     pFile.constraints = {
       ...pFile.extractedConstraints,
+      ...config.constraints,
       ...pFile.constraints,
     };
     delete pFile.extractedConstraints;