diff --git a/client/src/test/java/dev/fitko/fitconnect/client/SenderClientTest.java b/client/src/test/java/dev/fitko/fitconnect/client/SenderClientTest.java
index d2d4d8a51fcbdd56f7b946137b9f3b13e8a8c5cc..e6e41b462e773b4464d663c175015f4be2e51efe 100644
--- a/client/src/test/java/dev/fitko/fitconnect/client/SenderClientTest.java
+++ b/client/src/test/java/dev/fitko/fitconnect/client/SenderClientTest.java
@@ -87,7 +87,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("Service", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://json.mimetype"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -129,7 +129,7 @@ public class SenderClientTest {
                 .withXmlData("<xml><test>data</test></xml>")
                 .withDestination(destinationId)
                 .withServiceType("Service", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://xml.mimetype"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -154,7 +154,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -215,7 +215,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -237,7 +237,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -259,7 +259,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -281,7 +281,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -303,7 +303,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -326,7 +326,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -348,7 +348,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);
@@ -410,7 +410,7 @@ public class SenderClientTest {
                 .withJsonData("{}")
                 .withDestination(destinationId)
                 .withServiceType("name", "urn:de:fim:leika:leistung:99400048079000")
-                .withSchemaUri(URI.create("https://schema.fitko.de/fim/s00000000009_1.0.0.schema.json"))
+                .withSchemaUri(URI.create("https://mimetype.test.de"))
                 .build();
 
         final var sentSubmission = senderClient.submit(submission);