Update false positives
diff --git a/res/spotbugs/filter-false-positives.xml b/res/spotbugs/filter-false-positives.xml
index 9a8688f..a8a31b8 100644
--- a/res/spotbugs/filter-false-positives.xml
+++ b/res/spotbugs/filter-false-positives.xml
@@ -312,6 +312,11 @@
     <Bug code="DE" />
   </Match>
   <Match>
+    <!-- Unit test confirms public no-arg constructor is not required -->
+    <Class name="org.apache.catalina.ha.session.DeltaRequest$AttributeInfo" />
+    <Pattern code="SE_NO_SUITABLE_CONSTRUCTOR_FOR_EXTERNALIZATION" />
+  </Match>
+  <Match>
     <!-- False positive caused by additional method syncs -->
     <Class name="org.apache.catalina.ha.session.DeltaManager" />
     <Field name="receiverQueue" />
@@ -2378,6 +2383,12 @@
   </Match>
   <Match>
     <!-- Deliberate hack for the purposes of the test -->
+    <Class name="org.apache.coyote.TestIoTimeouts$EchoListener"/>
+    <Field name="t"/>
+    <Bug pattern="ST_WRITE_TO_STATIC_FROM_INSTANCE_METHOD"/>
+  </Match>
+  <Match>
+    <!-- Deliberate hack for the purposes of the test -->
     <Class name="org.apache.coyote.http11.filters.TestChunkedInputFilter$BodyReadServlet"/>
     <Or>
       <Field name="countRead"/>