diff --git a/build-aux/flatpak/org.gtk.Demo4.json b/build-aux/flatpak/org.gtk.Demo4.json
index cfa3ad46a8..863f07198a 100644
--- a/build-aux/flatpak/org.gtk.Demo4.json
+++ b/build-aux/flatpak/org.gtk.Demo4.json
@@ -197,9 +197,4 @@
             ]
         }
     ],
-    "build-options" : {
-        "env" : {
-            "GSK_RENDERER" : "opengl"
-        }
-    }
 }
diff --git a/build-aux/flatpak/org.gtk.WidgetFactory4.json b/build-aux/flatpak/org.gtk.WidgetFactory4.json
index cd5981e512..e8de74d2e8 100644
--- a/build-aux/flatpak/org.gtk.WidgetFactory4.json
+++ b/build-aux/flatpak/org.gtk.WidgetFactory4.json
@@ -129,7 +129,6 @@
     "build-options" : {
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
-            "GSK_RENDERER" : "opengl",
             "G_ENABLE_DEBUG" : "true"
         }
     }
diff --git a/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json b/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
index 0a4783e5f5..4b3fc15e22 100644
--- a/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
+++ b/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
@@ -129,7 +129,6 @@
     "build-options" : {
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
-            "GSK_RENDERER" : "opengl",
             "G_ENABLE_DEBUG" : "true"
         }
     }