diff --git a/lib/modules/datasource/maven/index.ts b/lib/modules/datasource/maven/index.ts
index 2a6d1bca4b0053f4d682ce09c37d577932d9ee61..70b1da5881139155b8b471aa67b77368ede8b393 100644
--- a/lib/modules/datasource/maven/index.ts
+++ b/lib/modules/datasource/maven/index.ts
@@ -112,7 +112,7 @@ export class MavenDatasource extends Datasource {
       return cachedVersions;
     }
 
-    const { authorization, xml: mavenMetadata } = await downloadMavenXml(
+    const { isCacheable, xml: mavenMetadata } = await downloadMavenXml(
       this.http,
       metadataUrl
     );
@@ -125,7 +125,7 @@ export class MavenDatasource extends Datasource {
       (acc, version) => ({ ...acc, [version]: null }),
       {}
     );
-    if (!authorization) {
+    if (isCacheable) {
       await packageCache.set(cacheNamespace, cacheKey, releaseMap, 30);
     }
     return releaseMap;
diff --git a/lib/modules/datasource/maven/types.ts b/lib/modules/datasource/maven/types.ts
index c66c311f1604b82eea4a28759924089b71431b44..1a24f174d36ecbc8e5a773512ae540c6fbf6da61 100644
--- a/lib/modules/datasource/maven/types.ts
+++ b/lib/modules/datasource/maven/types.ts
@@ -9,7 +9,7 @@ export interface MavenDependency {
 }
 
 export interface MavenXml {
-  authorization?: boolean;
+  isCacheable?: boolean;
   xml?: XmlDocument;
 }
 
diff --git a/lib/modules/datasource/maven/util.ts b/lib/modules/datasource/maven/util.ts
index 31dd6042def15c3b47067968a6d65cb5e89e27fc..4ce30dc51b0eb100fbaaf8d2ea33994f0c934bf9 100644
--- a/lib/modules/datasource/maven/util.ts
+++ b/lib/modules/datasource/maven/util.ts
@@ -150,6 +150,9 @@ export async function downloadMavenXml(
   if (!pkgUrl) {
     return {};
   }
+
+  let isCacheable = false;
+
   let rawContent: string | undefined;
   let authorization: boolean | undefined;
   let statusCode: number | undefined;
@@ -178,7 +181,11 @@ export async function downloadMavenXml(
     return {};
   }
 
-  return { authorization, xml: new XmlDocument(rawContent) };
+  if (!authorization) {
+    isCacheable = true;
+  }
+
+  return { isCacheable, xml: new XmlDocument(rawContent) };
 }
 
 export function getDependencyParts(packageName: string): MavenDependency {