diff --git a/include/modules/custom.hpp b/include/modules/custom.hpp
index 03c53c2f..8104d896 100644
--- a/include/modules/custom.hpp
+++ b/include/modules/custom.hpp
@@ -2,7 +2,6 @@
 
 #include <fmt/format.h>
 
-#include <csignal>
 #include <mutex>
 #include <string>
 #include <variant>
diff --git a/include/util/worker_thread.hpp b/include/util/worker_thread.hpp
index 7d005346..502f5970 100644
--- a/include/util/worker_thread.hpp
+++ b/include/util/worker_thread.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <chrono>
+#include <csignal>
 #include <optional>
 #include <string>
 
@@ -36,6 +37,9 @@ class WorkerThread {
     if (config["restart-interval"].isUInt()) {
       restart_interval_ = std::chrono::seconds(config["restart-interval"].asUInt());
     }
+    if (config["signal"].isInt()) {
+      signal_ = SIGRTMIN + config["signal"].asInt();
+    }
 
     if (interval_.count() > 0) {
       thread_ = [this] { delay_worker(); };
@@ -51,7 +55,13 @@ class WorkerThread {
     }
   }
 
-  auto wake_up() { return thread_.wake_up(); }
+  void refresh(int signal) {
+    if (signal_.has_value() && *signal_ == signal) {
+      wake_up();
+    }
+  }
+
+  void wake_up() { thread_.wake_up(); }
 
  private:
   void delay_worker() {
@@ -123,6 +133,7 @@ class WorkerThread {
   std::string                         exec_if_;
   std::chrono::seconds                interval_;
   std::optional<std::chrono::seconds> restart_interval_;
+  std::optional<int>                  signal_;
   std::function<void(std::string)>    output_callback_;
   std::function<void(int)>            exit_callback_;
   int                                 pid_;
diff --git a/src/bar.cpp b/src/bar.cpp
index 9cf85b41..ec59eb29 100644
--- a/src/bar.cpp
+++ b/src/bar.cpp
@@ -632,6 +632,9 @@ void waybar::Bar::handleSignal(int signal) {
       custom->refresh(signal);
     }
   }
+  for (auto& thread : custom_threads_) {
+    thread->refresh(signal);
+  }
 }
 
 void waybar::Bar::getModules(const Factory& factory, const std::string& pos) {
diff --git a/src/modules/custom.cpp b/src/modules/custom.cpp
index 58695477..a84489c0 100644
--- a/src/modules/custom.cpp
+++ b/src/modules/custom.cpp
@@ -36,11 +36,7 @@ void waybar::modules::Custom::injectOutput(Json::Value output) {
   dp.emit();
 }
 
-void waybar::modules::Custom::refresh(int sig) {
-  if (sig == SIGRTMIN + config_["signal"].asInt()) {
-    thread_.wake_up();
-  }
-}
+void waybar::modules::Custom::refresh(int sig) { thread_.refresh(sig); }
 
 void waybar::modules::Custom::handleEvent() {
   if (!config_["exec-on-event"].isBool() || config_["exec-on-event"].asBool()) {