diff --git a/src/Network/GemServ/Internal.hs b/src/Network/GemServ/Internal.hs
index 3027783..138fe23 100644
--- a/src/Network/GemServ/Internal.hs
+++ b/src/Network/GemServ/Internal.hs
@@ -22,6 +22,12 @@ You should have received a copy of the GNU Affero General Public
 License along with this program.  If not, see
 <https://www.gnu.org/licenses/>.
 
+= Important Note
+
+This is an internal module.  It is not intended to be accessed by
+outside packages, and should be considered subject to change at any
+time.
+
 -}
 
 module Network.GemServ.Internal (