diff --git a/qendpoint-backend/pom.xml b/qendpoint-backend/pom.xml
index 656913e6..6b75e331 100644
--- a/qendpoint-backend/pom.xml
+++ b/qendpoint-backend/pom.xml
@@ -44,8 +44,8 @@
         <junit.version>4.13.2</junit.version>
         <lwjgl.version>3.3.1</lwjgl.version>
         <rdf4j.version>5.0.2</rdf4j.version>
-        <spring.version>3.0.2</spring.version>
-        <logback.version>1.4.5</logback.version>
+        <spring.version>3.4.0</spring.version>
+        <logback.version>1.5.6</logback.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
@@ -105,6 +105,12 @@
             <groupId>com.the-qa-company</groupId>
             <artifactId>qendpoint</artifactId>
             <version>${project.parent.version}</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.eclipse.rdf4j</groupId>
+                    <artifactId>rdf4j-sail-solr</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
         <!-- v1.15 is needed for Jena 3.14+ - copied from org.apache.jena:jena:pom -->
         <dependency>
diff --git a/qendpoint-core/pom.xml b/qendpoint-core/pom.xml
index b5572991..d0522ca2 100644
--- a/qendpoint-core/pom.xml
+++ b/qendpoint-core/pom.xml
@@ -45,7 +45,7 @@
         <junit.version>4.13.2</junit.version>
         <lwjgl.version>3.3.1</lwjgl.version>
         <spring.version>2.7.5</spring.version>
-        <logback.version>1.4.5</logback.version>
+        <logback.version>1.5.6</logback.version>
         <roaringbitmap.version>0.9.44</roaringbitmap.version>
 
         <jena.version>4.3.2</jena.version>
diff --git a/qendpoint-store/pom.xml b/qendpoint-store/pom.xml
index 8eaaf929..308b1c1f 100644
--- a/qendpoint-store/pom.xml
+++ b/qendpoint-store/pom.xml
@@ -42,7 +42,7 @@
         <junit.version>4.13.2</junit.version>
         <lwjgl.version>3.3.1</lwjgl.version>
         <rdf4j.version>5.1.0</rdf4j.version>
-        <logback.version>1.4.5</logback.version>
+        <logback.version>1.5.6</logback.version>
 
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>