diff --git a/CHANGELOG.md b/CHANGELOG.md
index a0e662b1..5f74fcdb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,17 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Bump QUDT version to [3.1.5](https://github.com/qudt/qudt-public-repo/releases/tag/v3.1.5)
+- Exclude all language-specific labels except `en` and `en-US` as their number has increased prohibitively for QUDTLib'
+  current architecture.
+
+### Fixed
+
+- Recently, the packaging of the `qudtlib` artifact was changed to `pom`, which caused its tests not to
+  be run any more. This is now fixed by explicitly binding the execution of `surefire:test` to the `test` phase.
+
 ## [7.0.1] - 2025-07-25
 
 ### Fixed
diff --git a/pom.xml b/pom.xml
index 8b269f5b..4232301e 100644
--- a/pom.xml
+++ b/pom.xml
@@ -49,7 +49,7 @@
         <maven.compiler.source>17</maven.compiler.source>
         <maven.compiler.target>17</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <qudt.release.version>3.1.4</qudt.release.version>
+        <qudt.release.version>3.1.5</qudt.release.version>
         <spotless.format.version>1.25.0</spotless.format.version>
     </properties>
 
diff --git a/qudtlib-data-gen/src/main/resources/update-units-by-query2.rq b/qudtlib-data-gen/src/main/resources/update-units-by-query2.rq
new file mode 100644
index 00000000..fb592561
--- /dev/null
+++ b/qudtlib-data-gen/src/main/resources/update-units-by-query2.rq
@@ -0,0 +1,15 @@
+PREFIX qudt: <http://qudt.org/schema/qudt/>
+PREFIX unit: <http://qudt.org/vocab/unit/>
+PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
+PREFIX quantitykind: <http://qudt.org/vocab/quantitykind/>
+
+DELETE {
+    ?s rdfs:label ?label .
+} WHERE {
+    ?s rdfs:label ?label .
+    FILTER( ! (LANG(?label) IN ("en","en-US")))
+    FILTER EXISTS {
+        ?s rdfs:label ?keep
+        FILTER( LANG(?keep) IN ("en","en-US"))
+    }
+}
\ No newline at end of file
diff --git a/qudtlib-main-rdf/pom.xml b/qudtlib-main-rdf/pom.xml
index 3a362299..33d0bfb8 100644
--- a/qudtlib-main-rdf/pom.xml
+++ b/qudtlib-main-rdf/pom.xml
@@ -41,6 +41,15 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>test</id>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>test</goal>
+                        </goals>
+                    </execution>
+                </executions>
                 <configuration>
                     <dependenciesToScan>
                         <dependency>io.github.qudtlib:qudtlib-test:test-jar:tests</dependency>
diff --git a/qudtlib/pom.xml b/qudtlib/pom.xml
index c5b7e5ab..1d25b8ec 100644
--- a/qudtlib/pom.xml
+++ b/qudtlib/pom.xml
@@ -40,6 +40,15 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-surefire-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <id>test</id>
+                        <phase>test</phase>
+                        <goals>
+                            <goal>test</goal>
+                        </goals>
+                    </execution>
+                </executions>
                 <configuration>
                     <dependenciesToScan>
                         <dependency>io.github.qudtlib:qudtlib-test:test-jar:tests</dependency>