diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2a27b3f..a07cea6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,16 @@
 # Changelog
 
+## v2.4.0-alpha.3
+
+### Enhancements
+
+* Add Feature Toggle for the Cohort Endpoint ([#217](https://github.com/medizininformatik-initiative/flare/pull/217))
+* Updated ontology to v3.0.0-alpha.1
+
 ## v2.4.0-alpha.2
 
+### Enhancements
+
 * Updated ontology to v3.0.0-alpha
 
 ## v2.4.0-alpha.1
diff --git a/README.md b/README.md
index 09db85e..b560243 100644
--- a/README.md
+++ b/README.md
@@ -79,6 +79,12 @@ have the .pem extension.
 
 * [REST API](docs/api.md)
 
+## FHIR Endpoint Requirements
+
+The FHIR endpoint used by FLARE (see `FLARE_FHIR_SERVER`) has to support the following parts of the FHIR specification:
+
+* the search result parameters `_count` and `_elements` should be supported for optimal performance
+
 ## License
 
 Copyright ???
diff --git a/docker-compose.yml b/docker-compose.yml
index 3062207..580ee74 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,6 @@
 services:
   flare:
-    image: ghcr.io/medizininformatik-initiative/flare:2.3.0-alpha.2
+    image: ghcr.io/medizininformatik-initiative/flare:2.4.0-alpha.3
     ports:
       - 8080:8080
     volumes:
diff --git a/pom.xml b/pom.xml
index e85da45..a4d26cd 100644
--- a/pom.xml
+++ b/pom.xml
@@ -13,7 +13,7 @@
 
   <groupId>de.medizininformatik-initiative</groupId>
   <artifactId>flare</artifactId>
-  <version>2.4.0-alpha.2</version>
+  <version>2.4.0-alpha.3</version>
 
   <name>Flare</name>
   <description>Flare</description>
@@ -21,7 +21,7 @@
   <properties>
     <java.version>17</java.version>
     <testcontainers.version>1.20.3</testcontainers.version>
-    <ontology.version>3.0.0-alpha</ontology.version>
+    <ontology.version>3.0.0-alpha.1</ontology.version>
   </properties>
 
   <dependencies>