diff --git a/bin/gbuild b/bin/gbuild
index 12e8f4f..e3f5c16 100755
--- a/bin/gbuild
+++ b/bin/gbuild
@@ -27,7 +27,7 @@ def sanitize(str, where)
 end
 
 def sanitize_path(str, where)
-  raise "unsanitary string in #{where}" if (str =~ /[^\w\/.:+-]/)
+  raise "unsanitary string in #{where}" if (str =~ /[^@\w\/.:+-]/)
   str
 end
 
diff --git a/bin/gsign b/bin/gsign
index 67c20f0..665e8ac 100755
--- a/bin/gsign
+++ b/bin/gsign
@@ -17,7 +17,7 @@ def sanitize(str, where)
 end
 
 def sanitize_path(str, where)
-  raise "unsanitary string in #{where}" if (str =~ /[^\w\/.-]/)
+  raise "unsanitary string in #{where}" if (str =~ /[^@\w\/.:+-]/)
   str
 end
 
diff --git a/bin/gverify b/bin/gverify
index 67ae337..84845af 100755
--- a/bin/gverify
+++ b/bin/gverify
@@ -17,7 +17,7 @@ def sanitize(str, where)
 end
 
 def sanitize_path(str, where)
-  raise "unsanitary string in #{where}" if (str =~ /[^@\w\/. -]/)
+  raise "unsanitary string in #{where}" if (str =~ /[^@\w\/.:+-]/)
   str
 end