diff --git a/java/pom.xml b/java/pom.xml
--- a/java/pom.xml
+++ b/java/pom.xml
@@ -44,7 +44,7 @@
     <dependency>
       <groupId>it.unimi.dsi</groupId>
       <artifactId>webgraph-big</artifactId>
-      <version>3.6.7</version>
+      <version>3.7.0</version>
     </dependency>
     <dependency>
       <groupId>it.unimi.dsi</groupId>
@@ -54,7 +54,7 @@
     <dependency>
       <groupId>it.unimi.dsi</groupId>
       <artifactId>dsiutils</artifactId>
-      <version>2.7.1</version>
+      <version>2.7.2</version>
     </dependency>
     <dependency>
         <groupId>it.unimi.dsi</groupId>
diff --git a/java/src/main/java/org/softwareheritage/graph/rpc/GraphServer.java b/java/src/main/java/org/softwareheritage/graph/rpc/GraphServer.java
--- a/java/src/main/java/org/softwareheritage/graph/rpc/GraphServer.java
+++ b/java/src/main/java/org/softwareheritage/graph/rpc/GraphServer.java
@@ -46,8 +46,7 @@
 
     /** Load a graph and all its properties. */
     public static SwhBidirectionalGraph loadGraph(String basename) throws IOException {
-        // TODO: use loadLabelledMapped() when https://github.com/vigna/webgraph-big/pull/5 is merged
-        SwhBidirectionalGraph g = SwhBidirectionalGraph.loadLabelled(basename, new ProgressLogger(logger));
+        SwhBidirectionalGraph g = SwhBidirectionalGraph.loadLabelledMapped(basename, new ProgressLogger(logger));
         g.loadContentLength();
         g.loadContentIsSkipped();
         g.loadPersonIds();