--- a/configure.ac.old	2023-03-02 14:21:42.687929964 +0100
+++ b/configure.ac	2023-03-02 14:28:47.497666291 +0100
@@ -169,12 +169,12 @@
 	[enable_appindicator="auto"]
 )
 if test x$enable_appindicator = xauto ; then
-	PKG_CHECK_EXISTS([appindicator3-0.1],
+	PKG_CHECK_EXISTS([ayatana-appindicator3-0.1],
 	                 [enable_appindicator="yes"],
 	                 [enable_appindicator="no"])
 fi
 if test x$enable_appindicator = xyes ; then
-	PKG_CHECK_MODULES(APP_INDICATOR, appindicator3-0.1)
+	PKG_CHECK_MODULES(APP_INDICATOR, ayatana-appindicator3-0.1)
 	AC_SUBST(APP_INDICATOR_CFLAGS)
 	AC_SUBST(APP_INDICATOR_LIBS)
 	AC_DEFINE(HAVE_APP_INDICATOR, 1, [Have AppIndicator])
--- a/ui-gtk/UgtkTrayIcon.h.old	2023-03-02 14:32:54.816318966 +0100
+++ b/ui-gtk/UgtkTrayIcon.h	2023-03-02 14:33:20.186180008 +0100
@@ -41,7 +41,7 @@
 #include <UgtkConfig.h>
 
 #ifdef HAVE_APP_INDICATOR
-#include <libappindicator/app-indicator.h>
+#include <libayatana-appindicator/app-indicator.h>
 #endif
 
 #ifdef __cplusplus