diff --git a/testsuite/tools/settings.in b/testsuite/tools/settings.in
index 5e32c80e12..38a69c1b00 100755
--- a/testsuite/tools/settings.in
+++ b/testsuite/tools/settings.in
@@ -1,6 +1,6 @@
 #! /bin/bash
 
-GTK_QUERY_SETTINGS=${GTK_QUERY_SETTINGS:-gtk-query-settings}
+GTK_QUERY_SETTINGS=${GTK_QUERY_SETTINGS:-gtk4-query-settings}
 TEST_RESULT_DIR=${TEST_RESULT_DIR:-/tmp}
 
 shopt -s nullglob
diff --git a/testsuite/tools/simplify-3to4.in b/testsuite/tools/simplify-3to4.in
index 3c0a515762..693e8bd05f 100755
--- a/testsuite/tools/simplify-3to4.in
+++ b/testsuite/tools/simplify-3to4.in
@@ -1,6 +1,6 @@
 #! /bin/bash
 
-GTK_BUILDER_TOOL=${GTK_BUILDER_TOOL:-gtk-builder-tool}
+GTK_BUILDER_TOOL=${GTK_BUILDER_TOOL:-gtk4-builder-tool}
 TEST_DATA_DIR=${TEST_DATA_DIR:-./simplify-data-3to4}
 TEST_RESULT_DIR=${TEST_RESULT_DIR:-/tmp}
 
diff --git a/testsuite/tools/simplify.in b/testsuite/tools/simplify.in
index 814f803091..08059f3c17 100755
--- a/testsuite/tools/simplify.in
+++ b/testsuite/tools/simplify.in
@@ -1,6 +1,6 @@
 #! /bin/bash
 
-GTK_BUILDER_TOOL=${GTK_BUILDER_TOOL:-gtk-builder-tool}
+GTK_BUILDER_TOOL=${GTK_BUILDER_TOOL:-gtk4-builder-tool}
 TEST_DATA_DIR=${TEST_DATA_DIR:-./simplify-data}
 TEST_RESULT_DIR=${TEST_RESULT_DIR:-/tmp}