diff --git a/codec-multipart/src/main/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultipartRequestDecoder.java b/codec-multipart/src/main/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultipartRequestDecoder.java
index 00f5533..da2732b 100644
--- a/codec-multipart/src/main/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultipartRequestDecoder.java
+++ b/codec-multipart/src/main/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultipartRequestDecoder.java
@@ -771,6 +771,18 @@ private InterfaceHttpData findMultipartDisposition() {
                                 throw new ErrorDataDecoderException(e);
                             }
                             currentFieldAttributes.put(HttpHeaderValues.CHARSET, attribute);
+                        } else if (contents[i].contains("=")) {
+                            String name = StringUtil.substringBefore(contents[i], '=');
+                            String values = StringUtil.substringAfter(contents[i], '=');
+                            Attribute attribute;
+                            try {
+                                attribute = factory.createAttribute(request, cleanString(name), values);
+                            } catch (NullPointerException e) {
+                                throw new ErrorDataDecoderException(e);
+                            } catch (IllegalArgumentException e) {
+                                throw new ErrorDataDecoderException(e);
+                            }
+                            currentFieldAttributes.put(name, attribute);
                         } else {
                             Attribute attribute;
                             try {
diff --git a/codec-multipart/src/test/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultiPartRequestDecoderTest.java b/codec-multipart/src/test/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultiPartRequestDecoderTest.java
index 098cace..4106074 100644
--- a/codec-multipart/src/test/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultiPartRequestDecoderTest.java
+++ b/codec-multipart/src/test/java/io/netty/contrib/handler/codec/http/multipart/HttpPostMultiPartRequestDecoderTest.java
@@ -300,6 +300,25 @@ public void testNotBadReleaseBuffersDuringDecodingMixedFactory() throws IOExcept
         commonNotBadReleaseBuffersDuringDecoding(factory, false);
     }
 
+    @Test
+    public void testDecodeFullHttpRequestWithOptionalParameters() {
+        String content = "\n--861fbeab-cd20-470c-9609-d40a0f704466\r\n" +
+                "content-disposition: form-data; " +
+                "name=\"file\"; filename=\"myfile.ogg\"\r\n" +
+                "content-type: audio/ogg; codecs=opus; charset=UTF8\r\ncontent-transfer-encoding: binary\r\n" +
+                "\r\n\u0001\u0002\u0003\u0004\r\n--861fbeab-cd20-470c-9609-d40a0f704466--\r\n\",\n";
+
+        FullHttpRequest req = new DefaultFullHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST, "/upload",
+                Unpooled.copiedBuffer(content, CharsetUtil.US_ASCII));
+        req.headers().set("content-type", "multipart/form-data; boundary=861fbeab-cd20-470c-9609-d40a0f704466");
+        req.headers().set("content-length", content.length());
+
+        HttpPostMultipartRequestDecoder test = new HttpPostMultipartRequestDecoder(req);
+        FileUpload httpData = (FileUpload) test.getBodyHttpDatas("file").get(0);
+        assertEquals("audio/ogg", httpData.getContentType());
+        test.destroy();
+    }
+
     private static void commonNotBadReleaseBuffersDuringDecoding(HttpDataFactory factory, boolean inMemory)
             throws IOException {
         int nbItems = 20;
diff --git a/pom.xml b/pom.xml
index bb3e16a..5fd2b6b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -66,7 +66,7 @@
   </developers>
 
   <properties>
-    <netty.version>4.1.78.Final</netty.version>
+    <netty.version>4.1.80.Final-SNAPSHOT</netty.version>
     <netty.build.version>29</netty.build.version>
     <project.scm.id>github</project.scm.id>
     <release.gpg.keyname />