diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6c96269..0e5e758 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,6 @@
+## 2.1.11
+- Made changes to /message_protocols end-point to work for old REMRem-Semantics library.
+
 ## 2.1.10
 - Mockito framework upgraded to 5.3.1
 
diff --git a/pom.xml b/pom.xml
index 9227c75..c94f2e4 100644
--- a/pom.xml
+++ b/pom.xml
@@ -10,7 +10,7 @@
     </parent>
 
     <properties>
-        <eiffel-remrem-generate.version>2.1.10</eiffel-remrem-generate.version>
+        <eiffel-remrem-generate.version>2.1.11</eiffel-remrem-generate.version>
         <eiffel-remrem-semantics.version>2.2.6</eiffel-remrem-semantics.version>
     </properties>
     <artifactId>eiffel-remrem-generate</artifactId>
diff --git a/service/src/main/java/com/ericsson/eiffel/remrem/generate/controller/RemremGenerateController.java b/service/src/main/java/com/ericsson/eiffel/remrem/generate/controller/RemremGenerateController.java
index 9d5d0ba..9ee5214 100644
--- a/service/src/main/java/com/ericsson/eiffel/remrem/generate/controller/RemremGenerateController.java
+++ b/service/src/main/java/com/ericsson/eiffel/remrem/generate/controller/RemremGenerateController.java
@@ -267,7 +267,13 @@ public JsonElement getMessageProtocols() {
         for (MsgService service : msgServices) {
             JsonObject protocolObject = new JsonObject();
             protocolObject.addProperty("name", service.getServiceName());
-            protocolObject.addProperty("edition", service.getProtocolEdition());
+            try {
+                protocolObject.addProperty("edition", service.getProtocolEdition());
+            } catch (NoSuchMethodError | AbstractMethodError e) {
+                // Ignored intentionally in order to ensure compatibility with
+                // eiffel-remrem-semantics:2.2.0 and older.
+                log.error("An old library, without implementation of MsgService.getProtocolEdition() is used. Please, upgrade to a newer library implementing eiffel-remrem-protocol-interface:2.1.2 or higher.");
+            }
             array.add(protocolObject);
         }
         return array;