diff --git a/src/Timer.cc b/src/Timer.cc
index 191d9c9e6e..f348731c73 100644
--- a/src/Timer.cc
+++ b/src/Timer.cc
@@ -9,7 +9,6 @@
 #include "zeek/RunState.h"
 #include "zeek/broker/Manager.h"
 #include "zeek/iosource/Manager.h"
-#include "zeek/iosource/PktSrc.h"
 #include "zeek/telemetry/Manager.h"
 #include "zeek/util.h"
 
diff --git a/src/threading/Manager.cc b/src/threading/Manager.cc
index f97427b08c..5499cbb8ed 100644
--- a/src/threading/Manager.cc
+++ b/src/threading/Manager.cc
@@ -7,7 +7,6 @@
 #include "zeek/IPAddr.h"
 #include "zeek/NetVar.h"
 #include "zeek/RunState.h"
-#include "zeek/iosource/Manager.h"
 #include "zeek/telemetry/Manager.h"
 
 namespace zeek::threading {
diff --git a/src/threading/MsgThread.h b/src/threading/MsgThread.h
index 259e64b11f..0bb3dbaec4 100644
--- a/src/threading/MsgThread.h
+++ b/src/threading/MsgThread.h
@@ -3,8 +3,6 @@
 #include <atomic>
 
 #include "zeek/DebugLogger.h"
-#include "zeek/Flare.h"
-#include "zeek/iosource/IOSource.h"
 #include "zeek/threading/BasicThread.h"
 #include "zeek/threading/Queue.h"