diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0674a0e9..dbd8e7ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,12 @@
 CHANGELOG
 =========
 
+4.3.0
+------------------
+
+* `getMetroCode` in the `Location` model has been deprecated. The code
+  values are no longer being maintained.
+
 4.2.1 (2024-09-20)
 ------------------
 
diff --git a/src/main/java/com/maxmind/geoip2/record/Location.java b/src/main/java/com/maxmind/geoip2/record/Location.java
index 6f944874..b457ad13 100644
--- a/src/main/java/com/maxmind/geoip2/record/Location.java
+++ b/src/main/java/com/maxmind/geoip2/record/Location.java
@@ -119,12 +119,12 @@ public Integer getAccuracyRadius() {
     }
 
     /**
-     * @return The metro code of the location if the location is in the US.
-     * MaxMind returns the same metro codes as the <a href=
-     * "https://developers.google.com/adwords/api/docs/appendix/cities-DMAregions"
-     * >Google AdWords API</a>.
+     * @return The metro code is a no-longer-maintained code for targeting
+     * advertisements in Google.
+     * @deprecated Code values are no longer maintained.
      */
     @JsonProperty("metro_code")
+    @Deprecated
     public Integer getMetroCode() {
         return this.metroCode;
     }
diff --git a/src/test/java/com/maxmind/geoip2/WebServiceClientTest.java b/src/test/java/com/maxmind/geoip2/WebServiceClientTest.java
index d70dd7f4..d2ee3075 100644
--- a/src/test/java/com/maxmind/geoip2/WebServiceClientTest.java
+++ b/src/test/java/com/maxmind/geoip2/WebServiceClientTest.java
@@ -67,6 +67,7 @@ public void test200WithInvalidJson() throws Exception {
         assertEquals("Received a 200 response but could not decode it as JSON", ex.getMessage());
     }
 
+    @SuppressWarnings("deprecation")
     @Test
     public void test200WithDefaultValues() throws Exception {
         WebServiceClient client = createSuccessClient("insights", "1.2.3.13",
diff --git a/src/test/java/com/maxmind/geoip2/model/InsightsResponseTest.java b/src/test/java/com/maxmind/geoip2/model/InsightsResponseTest.java
index 3f3b3efb..95f71bdc 100644
--- a/src/test/java/com/maxmind/geoip2/model/InsightsResponseTest.java
+++ b/src/test/java/com/maxmind/geoip2/model/InsightsResponseTest.java
@@ -105,6 +105,7 @@ public void leastSpecificSubdivision() {
         );
     }
 
+    @SuppressWarnings("deprecation")
     @Test
     public void testTraits() {
         Traits traits = this.insights.getTraits();
@@ -172,6 +173,7 @@ public void testTraits() {
         );
     }
 
+    @SuppressWarnings("deprecation")
     @Test
     public void testLocation() {