Index: pkgIndex.tcl.in
==================================================================
--- pkgIndex.tcl.in
+++ pkgIndex.tcl.in
@@ -1,6 +1,6 @@
-package ifneeded tls @PACKAGE_VERSION@ [list apply {{dir} {
+package ifneeded tls @PACKAGE_VERSION@ [join [list [list package require Tcl 8.5] [list apply {{dir} {
 	if {{@TCLEXT_BUILD@} eq "static"} {
 		load {} Tls
 	} else {
 		load [file join $dir tcltls.@SHOBJEXT@] Tls
 	}
@@ -7,6 +7,6 @@
 
 	set tlsTclInitScript [file join $dir tls.tcl]
 	if {[file exists $tlsTclInitScript]} {
 		source $tlsTclInitScript
 	}
-}} $dir]
+}} $dir]] "; "]