diff --git a/src/main/java/de/dm/prom/structuredlogging/MdcContext.java b/src/main/java/de/dm/prom/structuredlogging/MdcContext.java
index 90f5a0f..489784a 100644
--- a/src/main/java/de/dm/prom/structuredlogging/MdcContext.java
+++ b/src/main/java/de/dm/prom/structuredlogging/MdcContext.java
@@ -8,6 +8,7 @@
 import org.slf4j.MDC;
 
 import java.lang.reflect.InvocationTargetException;
+import java.time.Duration;
 import java.time.Instant;
 import java.time.LocalDate;
 import java.time.LocalDateTime;
@@ -40,6 +41,7 @@ public final class MdcContext implements java.io.Closeable {
         module.addSerializer(Period.class, new ToStringSerializer());
         module.addSerializer(ZonedDateTime.class, new ToStringSerializer());
         module.addSerializer(LocalTime.class, new ToStringSerializer());
+        module.addSerializer(Duration.class, new ToStringSerializer());
 
         OBJECT_MAPPER.registerModule(module);
     }
diff --git a/src/test/java/de/dm/prom/structuredlogging/SpringMdcTaskDecoratorUnitTest.java b/src/test/java/de/dm/prom/structuredlogging/SpringMdcTaskDecoratorUnitTest.java
index e100e8b..e2217bc 100644
--- a/src/test/java/de/dm/prom/structuredlogging/SpringMdcTaskDecoratorUnitTest.java
+++ b/src/test/java/de/dm/prom/structuredlogging/SpringMdcTaskDecoratorUnitTest.java
@@ -188,7 +188,7 @@ void logOverwriteLogsNothingWhenEmpty() throws Throwable {
 
     @Test
     @DisplayName("decorate decorates and does not log WARN when encountering thread without existing MDC context with JUST_OVERWRITE")
-    void logOverweiteDoesNotLog() throws Throwable {
+    void logOverwriteDoesNotLog() throws Throwable {
         SpringMdcTaskDecorator mdcTaskDecorator = new SpringMdcTaskDecorator(OverwriteStrategy.JUST_OVERWRITE);
 
         MDC.put("testKey", "testValue");