diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..bd6117b
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+*.htm linguist-detectable=false
diff --git a/src/routes/legal.js b/src/routes/legal.js
index 0da9949..b691914 100644
--- a/src/routes/legal.js
+++ b/src/routes/legal.js
@@ -59,7 +59,7 @@ router.get([
   '/termsofservice/archive/:date',
   '/terms-of-service/archive/:date'
 ], (req, res) => {
-  res.render(`legal/archive/tos-${req.params.date}.html`, {
+  res.render(`legal/archive/tos-${req.params.date}.htm`, {
     production: config.PRODUCTION,
     client_versobe: config.CLIENT_VERBOSE
   });
@@ -98,7 +98,7 @@ router.get(['/privacy-pdf', '/privacy-policy-pdf', '/privacypolicy-pdf'], (req,
  * @inner
  */
 router.get(['/privacy/archive/:date', '/privacy-policy/archive/:date', '/privacypolicy/archive/:date'], (req, res) => {
-  res.render(`legal/archive/privacy-${req.params.date}.html`, {
+  res.render(`legal/archive/privacy-${req.params.date}.htm`, {
     production: config.PRODUCTION,
     client_versobe: config.CLIENT_VERBOSE
   });
diff --git a/src/views/legal/archive/privacy-20201117.html b/src/views/legal/archive/privacy-20201117.htm
similarity index 100%
rename from src/views/legal/archive/privacy-20201117.html
rename to src/views/legal/archive/privacy-20201117.htm
diff --git a/src/views/legal/archive/privacy-20201120.html b/src/views/legal/archive/privacy-20201120.htm
similarity index 100%
rename from src/views/legal/archive/privacy-20201120.html
rename to src/views/legal/archive/privacy-20201120.htm
diff --git a/src/views/legal/archive/privacy-20201122.html b/src/views/legal/archive/privacy-20201122.htm
similarity index 100%
rename from src/views/legal/archive/privacy-20201122.html
rename to src/views/legal/archive/privacy-20201122.htm
diff --git a/src/views/legal/archive/tos-20201115.html b/src/views/legal/archive/tos-20201115.htm
similarity index 100%
rename from src/views/legal/archive/tos-20201115.html
rename to src/views/legal/archive/tos-20201115.htm
diff --git a/src/views/legal/archive/tos-20201117.html b/src/views/legal/archive/tos-20201117.htm
similarity index 100%
rename from src/views/legal/archive/tos-20201117.html
rename to src/views/legal/archive/tos-20201117.htm
diff --git a/src/views/legal/archive/tos-20201122.html b/src/views/legal/archive/tos-20201122.htm
similarity index 100%
rename from src/views/legal/archive/tos-20201122.html
rename to src/views/legal/archive/tos-20201122.htm