diff --git a/shared/extra-utils/mock-servers/mock-instances-index.ts b/shared/extra-utils/mock-servers/mock-instances-index.ts
index 2aabef9d2..5baec00de 100644
--- a/shared/extra-utils/mock-servers/mock-instances-index.ts
+++ b/shared/extra-utils/mock-servers/mock-instances-index.ts
@@ -29,7 +29,7 @@ export class MockInstancesIndex {
         })
       })
 
-      const port = 42101 + randomInt(1, 100)
+      const port = 42000 + randomInt(1, 1000)
       app.listen(port, () => res(port))
     })
   }
diff --git a/shared/extra-utils/mock-servers/mock-joinpeertube-versions.ts b/shared/extra-utils/mock-servers/mock-joinpeertube-versions.ts
index 5106fc66a..79be31f61 100644
--- a/shared/extra-utils/mock-servers/mock-joinpeertube-versions.ts
+++ b/shared/extra-utils/mock-servers/mock-joinpeertube-versions.ts
@@ -22,7 +22,7 @@ export class MockJoinPeerTubeVersions {
         })
       })
 
-      const port = 42201 + randomInt(1, 100)
+      const port = 43000 + randomInt(1, 1000)
       app.listen(port, () => res(port))
     })
   }
diff --git a/shared/extra-utils/mock-servers/mock-object-storage.ts b/shared/extra-utils/mock-servers/mock-object-storage.ts
index b6071b2f2..144f2819d 100644
--- a/shared/extra-utils/mock-servers/mock-object-storage.ts
+++ b/shared/extra-utils/mock-servers/mock-object-storage.ts
@@ -32,7 +32,7 @@ export class MockObjectStorage {
         )
       })
 
-      const port = 42301 + randomInt(1, 100)
+      const port = 44000 + randomInt(1, 1000)
       this.server = app.listen(port, () => res(port))
     })
   }
diff --git a/shared/extra-utils/mock-servers/mock-plugin-blocklist.ts b/shared/extra-utils/mock-servers/mock-plugin-blocklist.ts
index 6a71532b5..344d4bdbb 100644
--- a/shared/extra-utils/mock-servers/mock-plugin-blocklist.ts
+++ b/shared/extra-utils/mock-servers/mock-plugin-blocklist.ts
@@ -23,7 +23,7 @@ export class MockBlocklist {
         return res.json(this.body)
       })
 
-      const port = 42201 + randomInt(1, 100)
+      const port = 45000 + randomInt(1, 1000)
       this.server = app.listen(port, () => res(port))
     })
   }
diff --git a/shared/extra-utils/mock-servers/mock-proxy.ts b/shared/extra-utils/mock-servers/mock-proxy.ts
index f955d3f9e..8583250f3 100644
--- a/shared/extra-utils/mock-servers/mock-proxy.ts
+++ b/shared/extra-utils/mock-servers/mock-proxy.ts
@@ -9,7 +9,7 @@ class MockProxy {
 
   initialize () {
     return new Promise<number>(res => {
-      const port = 42501 + randomInt(1, 100)
+      const port = 46000 + randomInt(1, 1000)
 
       this.server = proxy(createServer())
       this.server.listen(port, () => res(port))