diff --git a/syntax/perl.nanorc b/syntax/perl.nanorc
index 81fec835..932540cd 100644
--- a/syntax/perl.nanorc
+++ b/syntax/perl.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Perl.
 
 syntax perl "\.p[lm]$"
-header "^#!.*perl[-0-9._]*"
+header "^#!.*perl"
 magic "Perl script"
 comment "#"
 
diff --git a/syntax/python.nanorc b/syntax/python.nanorc
index 66dc8c84..671cda80 100644
--- a/syntax/python.nanorc
+++ b/syntax/python.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Python.
 
 syntax python "\.py$"
-header "^#!.*python[-0-9._]*"
+header "^#!.*python"
 magic "Python script"
 linter pyflakes
 comment "#"
diff --git a/syntax/ruby.nanorc b/syntax/ruby.nanorc
index ab12cc05..2fe19449 100644
--- a/syntax/ruby.nanorc
+++ b/syntax/ruby.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Ruby.
 
 syntax ruby "\.rb$"
-header "^#!.*ruby[-0-9._]*"
+header "^#!.*ruby"
 magic "Ruby script"
 linter ruby -w -c
 comment "#"
diff --git a/syntax/sh.nanorc b/syntax/sh.nanorc
index b590674a..6c86683f 100644
--- a/syntax/sh.nanorc
+++ b/syntax/sh.nanorc
@@ -1,7 +1,7 @@
 ## Here is an example for Bourne shell scripts.
 
 syntax sh "(\.sh|\.(a|ba|c|da|k|mk|pdk|tc|z)(sh|shrc|sh_profile)|/(etc/|\.)profile)$"
-header "^#!.*(a|ba|c|da|k|mk|pdk|tc|z)?(sh[-0-9_]*|openrc-run|runscript)"
+header "^#!.*/(((a|ba|c|da|k|mk|pdk|tc|z)?sh)|openrc-run|runscript)"
 magic "(POSIX|Bourne-Again) shell script.*text"
 linter dash -n
 comment "#"