diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6906bb2227..d37a0cde4f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,7 +13,7 @@ jobs:
           libasound2-dev
           libgl-dev
           libglew-dev
-          libgtk2.0-dev
+          libgtk-3-dev
           libjack-dev
           libmad0-dev
           libpulse-dev
@@ -40,7 +40,7 @@ jobs:
           libasound2-dev
           libgl-dev
           libglew-dev
-          libgtk2.0-dev
+          libgtk-3-dev
           libjack-dev
           libjsoncpp-dev
           libmad0-dev
diff --git a/CMake/DefineOptions.cmake b/CMake/DefineOptions.cmake
index 1c438cce89..75de70aa2d 100644
--- a/CMake/DefineOptions.cmake
+++ b/CMake/DefineOptions.cmake
@@ -96,7 +96,7 @@ elseif(LINUX)
   option(WITH_TTY "Build with Linux TTY Input Support." OFF)
   option(WITH_PROFILING "Build with Profiling Support." OFF)
   option(WITH_GLES2 "Build with OpenGL ES 2.0 Support." ON)
-  option(WITH_GTK2 "Build with GTK2 Support." ON)
+  option(WITH_GTK3 "Build with GTK3 Support." ON)
   option(WITH_PARALLEL_PORT "Build with Parallel Lights I/O Support." OFF)
   option(WITH_CRASH_HANDLER "Build with Crash Handler Support." ON)
   option(WITH_XINERAMA
diff --git a/CMake/Modules/FindGTK3.cmake b/CMake/Modules/FindGTK3.cmake
new file mode 100644
index 0000000000..e3330d8724
--- /dev/null
+++ b/CMake/Modules/FindGTK3.cmake
@@ -0,0 +1,9 @@
+# Use pkg-config to find installed gtk+3 if available
+#
+# Once found, the following are defined:
+#  GTK3_FOUND
+#  GTK3_INCLUDE_DIRS
+#  GTK3_LIBRARIES
+
+include(FindPkgConfig)
+pkg_check_modules(GTK3 gtk+-3.0)
diff --git a/StepmaniaCore.cmake b/StepmaniaCore.cmake
index dcab93cef0..99d5a36a92 100644
--- a/StepmaniaCore.cmake
+++ b/StepmaniaCore.cmake
@@ -365,17 +365,17 @@ elseif(MACOSX)
                    MAC_FRAME_OPENGL
                    MAC_FRAME_SYSTEM)
 elseif(LINUX)
-  if(WITH_GTK2)
-    find_package("GTK2" 2.0)
-    if(${GTK2_FOUND})
-      set(HAS_GTK2 TRUE)
+  if(WITH_GTK3)
+    find_package("GTK3" 2.0)
+    if(${GTK3_FOUND})
+      set(HAS_GTK3 TRUE)
     else()
-      set(HAS_GTK2 FALSE)
+      set(HAS_GTK3 FALSE)
       message(
-        "GTK2 was not found on your system. There will be no loading window.")
+        "GTK3 was not found on your system. There will be no loading window.")
     endif()
   else()
-    set(HAS_GTK2 FALSE)
+    set(HAS_GTK3 FALSE)
   endif()
 
   set(HAS_X11 FALSE)
diff --git a/src/CMakeData-arch.cmake b/src/CMakeData-arch.cmake
index b8bd4682d6..6d6ccd4a12 100644
--- a/src/CMakeData-arch.cmake
+++ b/src/CMakeData-arch.cmake
@@ -185,7 +185,7 @@ else()
     list(APPEND SMDATA_ARCH_LOADING_HPP
                 "arch/LoadingWindow/LoadingWindow_MacOSX.h")
   elseif(LINUX)
-    if(GTK2_FOUND)
+    if(GTK3_FOUND)
       list(APPEND SMDATA_ARCH_LOADING_SRC
                   "arch/LoadingWindow/LoadingWindow_Gtk.cpp")
       list(APPEND SMDATA_ARCH_LOADING_HPP
diff --git a/src/CMakeData-gtk.cmake b/src/CMakeData-gtk.cmake
index 10f9ea6b83..80a3817f20 100644
--- a/src/CMakeData-gtk.cmake
+++ b/src/CMakeData-gtk.cmake
@@ -1,4 +1,4 @@
-if(NOT GTK2_FOUND)
+if(NOT GTK3_FOUND)
   return()
 endif()
 
@@ -28,13 +28,13 @@ set_target_properties("GtkModule"
 set_target_properties("GtkModule"
                       PROPERTIES LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO
                                  "${SM_ROOT_DIR}")
-target_link_libraries("GtkModule" ${GTK2_LIBRARIES})
+target_link_libraries("GtkModule" ${GTK3_LIBRARIES})
 set_property(TARGET "GtkModule" PROPERTY FOLDER "Internal Libraries")
 list(APPEND SM_GTK_INCLUDE_DIRS
             "${SM_SRC_DIR}"
             "${SM_SRC_DIR}/generated"
             "${SM_SRC_DIR}/arch/LoadingWindow"
-            "${GTK2_INCLUDE_DIRS}")
+            "${GTK3_INCLUDE_DIRS}")
 
 sm_add_compile_definition("GtkModule" CMAKE_POWERED)
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 97ed7617b4..f9bd0becf6 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -390,7 +390,7 @@ else() # Linux
     sm_add_compile_definition("${SM_EXE_NAME}" BSD)
   endif()
 
-  if(GTK2_FOUND)
+  if(GTK3_FOUND)
     sm_add_compile_definition("${SM_EXE_NAME}" HAVE_GTK)
   endif()
 
@@ -571,8 +571,8 @@ else() # Unix / Linux TODO: Remember to find and locate the zip archive files.
 
   list(APPEND SMDATA_LINK_LIB "${OPENGL_LIBRARY}")
 
-  if(GTK2_FOUND)
-    list(APPEND SMDATA_LINK_LIB "${GTK2_LIBRARIES}")
+  if(GTK3_FOUND)
+    list(APPEND SMDATA_LINK_LIB "${GTK3_LIBRARIES}")
   endif()
 
   list(APPEND SMDATA_LINK_LIB "${BZIP2_LIBRARIES}" "${CMAKE_THREAD_LIBS_INIT}")
@@ -661,8 +661,8 @@ if(NOT APPLE)
         list(APPEND SM_INCLUDE_DIRS "${SM_FFMPEG_SRC_DIR}" "${SM_FFMPEG_ROOT}")
       endif()
     endif()
-    if(HAS_GTK2)
-      list(APPEND SM_INCLUDE_DIRS "${GTK2_INCLUDE_DIRS}")
+    if(HAS_GTK3)
+      list(APPEND SM_INCLUDE_DIRS "${GTK3_INCLUDE_DIRS}")
     endif()
     if(X11_FOUND)
       list(APPEND SM_INCLUDE_DIRS "${X11_INCLUDE_DIR}")
diff --git a/src/arch/LoadingWindow/LoadingWindow_GtkModule.cpp b/src/arch/LoadingWindow/LoadingWindow_GtkModule.cpp
index 394dbe1f84..af0cce7ed0 100644
--- a/src/arch/LoadingWindow/LoadingWindow_GtkModule.cpp
+++ b/src/arch/LoadingWindow/LoadingWindow_GtkModule.cpp
@@ -43,7 +43,7 @@ extern "C" const char *Init( int *argc, char ***argv )
 	progressBar = gtk_progress_bar_new();
 	gtk_progress_bar_set_fraction( GTK_PROGRESS_BAR(progressBar), 0.0 );
 
-	vbox = gtk_vbox_new(FALSE,0);
+	vbox = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 	gtk_container_add(GTK_CONTAINER(window),vbox);
 	gtk_box_pack_start(GTK_BOX(vbox),splash,FALSE,FALSE,0);
 	gtk_box_pack_end(GTK_BOX(vbox),progressBar,FALSE,FALSE,0);