diff --git a/pom.xml b/pom.xml
index 649ec1b..974b16f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -41,7 +41,7 @@
     <com.io7m.zelador.version>1.0.0</com.io7m.zelador.version>
 
     <!-- Third-party dependencies. -->
-    <io.opentelemetry.version>1.39.0</io.opentelemetry.version>
+    <io.opentelemetry.version>1.40.0</io.opentelemetry.version>
     <jqwik.version>1.9.0</jqwik.version>
     <org.junit.version>5.10.3</org.junit.version>
     <containers.postgresql.version>16.3</containers.postgresql.version>