diff --git a/java/src/org/openqa/selenium/devtools/v134/v134Network.java b/java/src/org/openqa/selenium/devtools/v134/v134Network.java
index dc815ae22af3a..04d2b0baf31e4 100644
--- a/java/src/org/openqa/selenium/devtools/v134/v134Network.java
+++ b/java/src/org/openqa/selenium/devtools/v134/v134Network.java
@@ -191,7 +191,21 @@ protected Command<Void> continueRequest(RequestPaused pausedReq, HttpRequest req
     }
 
     List<HeaderEntry> headers = new ArrayList<>();
-    req.forEachHeader((name, value) -> headers.add(new HeaderEntry(name, value)));
+
+    // First add the original headers from the paused request to preserve them
+    pausedReq
+        .getRequest()
+        .getHeaders()
+        .forEach((name, value) -> headers.add(new HeaderEntry(name, String.valueOf(value))));
+
+    // Then add any new headers from the modified request, which will override existing ones if
+    // present
+    req.forEachHeader(
+        (name, value) -> {
+          // Remove any existing header with the same name
+          headers.removeIf(h -> h.getName().equalsIgnoreCase(name));
+          headers.add(new HeaderEntry(name, value));
+        });
 
     return Fetch.continueRequest(
         pausedReq.getRequestId(),