diff --git a/alexandria-markup-api/pom.xml b/alexandria-markup-api/pom.xml
index 679879f..403e0b1 100644
--- a/alexandria-markup-api/pom.xml
+++ b/alexandria-markup-api/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>nl.knaw.huygens.alexandria</groupId>
     <artifactId>alexandria</artifactId>
-    <version>2.4</version>
+    <version>2.4.1</version>
   </parent>
   <artifactId>alexandria-markup-api</artifactId>
 
diff --git a/alexandria-markup-client/pom.xml b/alexandria-markup-client/pom.xml
index b1f78f9..d1a4366 100644
--- a/alexandria-markup-client/pom.xml
+++ b/alexandria-markup-client/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>nl.knaw.huygens.alexandria</groupId>
         <artifactId>alexandria</artifactId>
-        <version>2.4</version>
+        <version>2.4.1</version>
     </parent>
     <artifactId>alexandria-markup-client</artifactId>
 
diff --git a/alexandria-markup-server/pom.xml b/alexandria-markup-server/pom.xml
index 12b4429..8a50766 100644
--- a/alexandria-markup-server/pom.xml
+++ b/alexandria-markup-server/pom.xml
@@ -4,7 +4,7 @@
     <parent>
         <groupId>nl.knaw.huygens.alexandria</groupId>
         <artifactId>alexandria</artifactId>
-        <version>2.4</version>
+        <version>2.4.1</version>
     </parent>
     <artifactId>alexandria-markup-server</artifactId>
 
diff --git a/pom.xml b/pom.xml
index 6ba9f4f..ab17b1d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>nl.knaw.huygens.alexandria</groupId>
     <artifactId>alexandria</artifactId>
-    <version>2.4</version>
+    <version>2.4.1</version>
     <inceptionYear>2015</inceptionYear>
     <packaging>pom</packaging>
     <modules>
@@ -57,7 +57,7 @@
         <maven-shade.version>3.1.0</maven-shade.version>
         <maven-surefire.version>3.0.0-M5</maven-surefire.version>
         <mockito.version>2.28.2</mockito.version>
-        <slf4j-api.version>1.8.0-beta2</slf4j-api.version><!-- Should be same version as used by dropwizard -->
+        <slf4j-api.version>2.0.0</slf4j-api.version><!-- Should be same version as used by dropwizard -->
         <wagon-ssh.version>3.3.3</wagon-ssh.version>
     </properties>