Index: tests/simpleClient.tcl
==================================================================
--- tests/simpleClient.tcl
+++ tests/simpleClient.tcl
@@ -1,8 +1,8 @@
 #!/bin/sh
 # The next line is executed by /bin/sh, but not tcl \
-exec tclsh8.3 "$0" ${1+"$@"}
+exec tclsh "$0" ${1+"$@"}
 
 package require tls
 
 set dir			[file join [file dirname [info script]] ../tests/certs]
 set OPTS(-cafile)	[file join $dir ca.pem]

Index: tests/simpleServer.tcl
==================================================================
--- tests/simpleServer.tcl
+++ tests/simpleServer.tcl
@@ -1,8 +1,8 @@
 #!/bin/sh
 # The next line is executed by /bin/sh, but not tcl \
-exec tclsh8.3 "$0" ${1+"$@"}
+exec tclsh "$0" ${1+"$@"}
 
 package require tls
 
 set dir			[file join [file dirname [info script]] ../tests/certs]
 set OPTS(-cafile)	[file join $dir ca.pem]