diff --git a/data/widgets/palette_popup.xml b/data/widgets/palette_popup.xml
index 1b80def74..2210dac06 100644
--- a/data/widgets/palette_popup.xml
+++ b/data/widgets/palette_popup.xml
@@ -1,8 +1,12 @@
 <!-- Aseprite -->
+<!-- Copyright (C) 2024 by Igara Studio S.A. -->
 <!-- Copyright (C) 2014-2017 by David Capello -->
 <gui>
   <vbox id="palette_popup">
-    <search id="search" magnet="true" />
+    <hbox>
+      <search id="search" magnet="true" expansive="true" />
+      <button text="" id="refresh" style="refresh_button" />
+    </hbox>
     <view id="view" expansive="true" />
     <hbox>
       <button id="load_pal" text="@.load" minwidth="80" magnet="true" />
diff --git a/src/app/ui/palette_popup.cpp b/src/app/ui/palette_popup.cpp
index 9bb7d3f17..2b782c9bc 100644
--- a/src/app/ui/palette_popup.cpp
+++ b/src/app/ui/palette_popup.cpp
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2020-2022  Igara Studio S.A.
+// Copyright (C) 2020-2024  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -23,6 +23,8 @@
 #include "ui/box.h"
 #include "ui/button.h"
 #include "ui/fit_bounds.h"
+#include "ui/keys.h"
+#include "ui/message.h"
 #include "ui/scale.h"
 #include "ui/theme.h"
 #include "ui/view.h"
@@ -45,6 +47,7 @@ PalettePopup::PalettePopup()
   m_paletteListBox.DoubleClickItem.connect([this]{ onLoadPal(); });
   m_paletteListBox.FinishLoading.connect([this]{ onSearchChange(); });
   m_popup->search()->Change.connect([this]{ onSearchChange(); });
+  m_popup->refresh()->Click.connect([this]{ onRefresh(); });
   m_popup->loadPal()->Click.connect([this]{ onLoadPal(); });
   m_popup->openFolder()->Click.connect([this]{ onOpenFolder(); });
 
@@ -78,6 +81,25 @@ void PalettePopup::showPopup(ui::Display* display,
   openWindowInForeground();
 }
 
+bool PalettePopup::onProcessMessage(ui::Message* msg)
+{
+  switch (msg->type()) {
+    case kKeyDownMessage: {
+      KeyMessage* keyMsg = static_cast<KeyMessage*>(msg);
+      KeyScancode scancode = keyMsg->scancode();
+      bool refresh = (scancode == kKeyF5 ||
+                      (msg->ctrlPressed() && scancode == kKeyR) ||
+                      (msg->cmdPressed() && scancode == kKeyR));
+      if (refresh) {
+        onRefresh();
+        return true;
+      }
+      break;
+    }
+  }
+  return ui::PopupWindow::onProcessMessage(msg);
+}
+
 void PalettePopup::onPalChange(const doc::Palette* palette)
 {
   const bool state =
@@ -112,6 +134,11 @@ void PalettePopup::onSearchChange()
   m_popup->view()->layout();
 }
 
+void PalettePopup::onRefresh()
+{
+  m_paletteListBox.reload();
+}
+
 void PalettePopup::onLoadPal()
 {
   const doc::Palette* palette = m_paletteListBox.selectedPalette();
diff --git a/src/app/ui/palette_popup.h b/src/app/ui/palette_popup.h
index 9bb9186fc..557ba843e 100644
--- a/src/app/ui/palette_popup.h
+++ b/src/app/ui/palette_popup.h
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2021-2022  Igara Studio S.A.
+// Copyright (C) 2021-2024  Igara Studio S.A.
 // Copyright (C) 2001-2017  David Capello
 //
 // This program is distributed under the terms of
@@ -31,8 +31,11 @@ namespace app {
                    const gfx::Rect& buttonPos);
 
   protected:
+    bool onProcessMessage(ui::Message* msg) override;
+
     void onPalChange(const doc::Palette* palette);
     void onSearchChange();
+    void onRefresh();
     void onLoadPal();
     void onOpenFolder();
 
diff --git a/src/app/ui/palettes_listbox.cpp b/src/app/ui/palettes_listbox.cpp
index dac696934..2393e7923 100644
--- a/src/app/ui/palettes_listbox.cpp
+++ b/src/app/ui/palettes_listbox.cpp
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2020-2023  Igara Studio S.A.
+// Copyright (C) 2020-2024  Igara Studio S.A.
 // Copyright (C) 2001-2017  David Capello
 //
 // This program is distributed under the terms of
@@ -126,10 +126,10 @@ PalettesListBox::PalettesListBox()
 
   m_extPaletteChanges =
     App::instance()->extensions().PalettesChange.connect(
-      [this]{ reload(); });
+      [this]{ markToReload(); });
   m_extPresetsChanges =
     App::instance()->PalettePresetsChange.connect(
-      [this]{ reload(); });
+      [this]{ markToReload(); });
 }
 
 const doc::Palette* PalettesListBox::selectedPalette()
diff --git a/src/app/ui/resources_listbox.cpp b/src/app/ui/resources_listbox.cpp
index d0cd310f3..47f5592cc 100644
--- a/src/app/ui/resources_listbox.cpp
+++ b/src/app/ui/resources_listbox.cpp
@@ -1,5 +1,5 @@
 // Aseprite
-// Copyright (C) 2020-2022  Igara Studio S.A.
+// Copyright (C) 2020-2024  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -111,8 +111,6 @@ private:
 ResourcesListBox::ResourcesListBox(ResourcesLoader* resourcesLoader)
   : m_resourcesLoader(resourcesLoader)
   , m_resourcesTimer(100)
-  , m_reload(false)
-  , m_loadingItem(nullptr)
 {
   m_resourcesTimer.Tick.connect([this]{ onTick(); });
 }
@@ -125,7 +123,24 @@ Resource* ResourcesListBox::selectedResource()
     return nullptr;
 }
 
+void ResourcesListBox::markToReload()
+{
+  deleteAllChildren();
+  m_reloadOnOpen = true;
+}
+
 void ResourcesListBox::reload()
+{
+  deleteAllChildren();
+
+  ASSERT(m_resourcesLoader);
+  if (m_resourcesLoader) {
+    m_resourcesLoader->reload();
+    m_resourcesTimer.start();
+  }
+}
+
+void ResourcesListBox::deleteAllChildren()
 {
   auto children = this->children(); // Create a copy because we'll
                                     // modify the list in the for()
@@ -136,8 +151,6 @@ void ResourcesListBox::reload()
     if (dynamic_cast<ResourceListItem*>(child))
       delete child;
   }
-
-  m_reload = true;
 }
 
 void ResourcesListBox::paintResource(Graphics* g, gfx::Rect& bounds, Resource* resource)
@@ -157,12 +170,15 @@ bool ResourcesListBox::onProcessMessage(ui::Message* msg)
   switch (msg->type()) {
 
     case kOpenMessage: {
-      if (m_reload) {
-        m_reload = false;
-        m_resourcesLoader->reload();
+      if (m_reloadOnOpen) {
+        m_reloadOnOpen = false;
+        reload();
+      }
+      else {
+        // Start timer to fill the list box with the current resource
+        // loader state.
+        m_resourcesTimer.start();
       }
-
-      m_resourcesTimer.start();
       break;
     }
 
diff --git a/src/app/ui/resources_listbox.h b/src/app/ui/resources_listbox.h
index 418e705ca..e5051522f 100644
--- a/src/app/ui/resources_listbox.h
+++ b/src/app/ui/resources_listbox.h
@@ -1,4 +1,5 @@
 // Aseprite
+// Copyright (C) 2024  Igara Studio S.A.
 // Copyright (C) 2001-2018  David Capello
 //
 // This program is distributed under the terms of
@@ -42,6 +43,7 @@ class ResourceListItem : public ui::ListItem {
 
     Resource* selectedResource();
 
+    void markToReload();
     void reload();
 
     obs::signal<void()> FinishLoading;
@@ -57,6 +59,7 @@ class ResourceListItem : public ui::ListItem {
     virtual void onResourceSizeHint(Resource* resource, gfx::Size& size) = 0;
 
   private:
+    void deleteAllChildren();
     void paintResource(ui::Graphics* g, gfx::Rect& bounds, Resource* resource);
     gfx::Size resourceSizeHint(Resource* resource);
 
@@ -65,10 +68,10 @@ class ResourceListItem : public ui::ListItem {
 
     std::unique_ptr<ResourcesLoader> m_resourcesLoader;
     ui::Timer m_resourcesTimer;
-    bool m_reload;
+    bool m_reloadOnOpen = false;
 
     class LoadingItem;
-    LoadingItem* m_loadingItem;
+    LoadingItem* m_loadingItem = nullptr;
   };
 
 } // namespace app