diff --git a/configure b/configure
index f730848..4e5ec01 100755
--- a/configure
+++ b/configure
@@ -87,7 +87,7 @@ REQUIRE_GLIB2 2 32 0
 echo
 
 if test "$cfg_with_gui" == "yes"; then
-  REQUIRE_GTK3 3 4 0 WITH_THREADS
+  REQUIRE_GTK4 4 0 0 WITH_THREADS
 fi
 
 if ! CHECK_INCLUDE locale.h locale || ! CHECK_INCLUDE libintl.h intl ; then
diff --git a/scripts/bash-based-configure b/scripts/bash-based-configure
index dc547e5..e05ebd0 100644
--- a/scripts/bash-based-configure
+++ b/scripts/bash-based-configure
@@ -1483,7 +1483,7 @@ EOF
 # It seems that people have more trouble with getting GTK+ to work
 # than with other toolkits, so we try a bit harder to diagnose them here.
 
-function REQUIRE_GTK3()
+function REQUIRE_GTK4()
 {  local want_major="$1"
    local want_minor="$2"
    local want_micro="$3"
@@ -1496,14 +1496,14 @@ function REQUIRE_GTK3()
 
    if test "$want_threads" == "WITH_THREADS"; then threads="--libs gthread-2.0"; fi
 
-   echo -e "\n/* *** REQUIRE_GTK3 */\n" >>$LOGFILE
+   echo -e "\n/* *** REQUIRE_GTK4 */\n" >>$LOGFILE
 
    echo "Gtk+ ${want_major}.${want_minor}.${want_micro} is required..."
 
    # See if pkgconfig returns something
 
    echo -n " pkg-config... "
-   if pkg-config --cflags gtk+-3.0 >>config.tmp 2>&1 && pkg-config $threads --libs gtk+-3.0 >>config.tmp 2>&1 ; then
+   if pkg-config --cflags gtk4 >>config.tmp 2>&1 && pkg-config $threads --libs gtk4 >>config.tmp 2>&1 ; then
         echo "works"
 	rm config.tmp
    else
@@ -1517,12 +1517,11 @@ Make sure you have the following packages installed:
 - pkg-config (sometimes, the obvious is overlooked ;-)
 - glib2
 - pango
-- atk
-- gtk3
+- gtk4
 
 Some GNU/Linux distributions (e.g. SuSE) distinguish between
-end-user packages of the libraries (e.g. 'gtk3') and
-versions suitable for building programs (e.g. 'gtk3-devel').
+end-user packages of the libraries (e.g. 'gtk4') and
+versions suitable for building programs (e.g. 'gtk4-devel').
 You might have to install the development versions explicitly
 even if you have already GTK+ or Gnome applications running
 on your system.
@@ -1533,14 +1532,14 @@ EOF
 
    # Do a test compile to make sure they did not return some junk
 
-   CFG_GTK3_CFLAGS=`pkg-config --cflags gtk+-3.0`
-   CFG_GTK3_LIBS=`pkg-config $threads --libs gtk+-3.0`
+   CFG_GTK4_CFLAGS=`pkg-config --cflags gtk4`
+   CFG_GTK4_LIBS=`pkg-config $threads --libs gtk4`
 
-   CFG_GTK3_BINDIR=`which pkg-config`
-   CFG_GTK3_BINDIR=`echo $CFG_GTK3_BINDIR | sed -e 's/.exe//' | sed -e 's/\/pkg-config//'`
+   CFG_GTK4_BINDIR=`which pkg-config`
+   CFG_GTK4_BINDIR=`echo $CFG_GTK4_BINDIR | sed -e 's/.exe//' | sed -e 's/\/pkg-config//'`
 
-   CFG_CFLAGS="$CFG_CFLAGS $CFG_GTK3_CFLAGS"
-   CFG_LIBS="$CFG_LIBS $CFG_GTK3_LIBS"
+   CFG_CFLAGS="$CFG_CFLAGS $CFG_GTK4_CFLAGS"
+   CFG_LIBS="$CFG_LIBS $CFG_GTK4_LIBS"
 
    cat >conftest.c <<EOF
 #include <gtk/gtk.h>
@@ -1568,9 +1567,9 @@ EOF
 
    # Successfully finished
 
-   echo "CFG_GTK3_CFLAGS = $CFG_GTK3_CFLAGS" >> Makefile.config
-   echo "CFG_GTK3_LIBS = $CFG_GTK3_LIBS" >> Makefile.config
-   echo "CFG_GTK3_BINDIR = $CFG_GTK3_BINDIR" >> Makefile.config
+   echo "CFG_GTK4_CFLAGS = $CFG_GTK4_CFLAGS" >> Makefile.config
+   echo "CFG_GTK4_LIBS = $CFG_GTK4_LIBS" >> Makefile.config
+   echo "CFG_GTK4_BINDIR = $CFG_GTK4_BINDIR" >> Makefile.config
    return 1
 }