diff --git a/config/ext_jenkins-infra.yaml b/config/ext_jenkins-infra.yaml
index 90796b334..536f9c956 100644
--- a/config/ext_jenkins-infra.yaml
+++ b/config/ext_jenkins-infra.yaml
@@ -435,7 +435,7 @@ controller:
                               <mirror>
                                   <id>aws-proxy</id>
                                   <url>https://repo.aws.jenkins.io/public/</url>
-                                  <mirrorOf>repo.jenkins-ci.org</mirrorOf>
+                                  <mirrorOf>*,!incrementals,!elementary-releases,!chimera-releases,!chimera-snapshots</mirrorOf>
                               </mirror>
                               <mirror>
                                   <id>aws-proxy-incrementals</id>
@@ -461,7 +461,7 @@ controller:
                               <mirror>
                                   <id>azure-proxy</id>
                                   <url>https://repo.azure.jenkins.io/public/</url>
-                                  <mirrorOf>repo.jenkins-ci.org</mirrorOf>
+                                  <mirrorOf>*,!incrementals,!elementary-releases,!chimera-releases,!chimera-snapshots</mirrorOf>
                               </mirror>
                               <mirror>
                                   <id>azure-proxy-incrementals</id>
@@ -487,7 +487,7 @@ controller:
                               <mirror>
                                   <id>do-proxy</id>
                                   <url>https://repo.do.jenkins.io/public/</url>
-                                  <mirrorOf>repo.jenkins-ci.org</mirrorOf>
+                                  <mirrorOf>*,!incrementals,!elementary-releases,!chimera-releases,!chimera-snapshots</mirrorOf>
                               </mirror>
                               <mirror>
                                   <id>do-proxy-incrementals</id>