diff --git a/static/styles/app_components.css b/static/styles/app_components.css
index fa26879eba..4301942826 100644
--- a/static/styles/app_components.css
+++ b/static/styles/app_components.css
@@ -469,7 +469,7 @@
         display: inline;
         margin-right: 8px;
 
-        font-family: FontAwesome, Yantramanav, "Source Sans 3";
+        font-family: FontAwesome;
         font-weight: 600;
     }
 }
diff --git a/static/styles/portico/archive.css b/static/styles/portico/archive.css
index 4c6433f2af..0d50053337 100644
--- a/static/styles/portico/archive.css
+++ b/static/styles/portico/archive.css
@@ -1,5 +1,5 @@
 body {
-    font-family: "Source Sans 3", "Helvetica Neue", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
     font-size: 14px;
 }
 
diff --git a/static/styles/portico/billing.css b/static/styles/portico/billing.css
index f4c882cb27..58ca244888 100644
--- a/static/styles/portico/billing.css
+++ b/static/styles/portico/billing.css
@@ -1,5 +1,5 @@
 .billing-upgrade-page {
-    font-family: "Source Sans 3", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
     background-color: hsl(0, 0%, 98%);
     height: 100vh;
 
@@ -131,7 +131,7 @@
         span {
             background: 0;
             box-shadow: none;
-            font-family: "Source Sans 3", Helvetica, Arial;
+            font-family: "Source Sans 3", sans-serif;
             font-size: 1.4em;
             line-height: 20px;
         }
diff --git a/static/styles/portico/markdown.css b/static/styles/portico/markdown.css
index 14a605c7d7..ea3e72dd57 100644
--- a/static/styles/portico/markdown.css
+++ b/static/styles/portico/markdown.css
@@ -242,14 +242,14 @@
     .tip::before {
         display: inline;
         content: "\f0eb   Tip:  ";
-        font-family: FontAwesome, Yantramanav, "Source Sans 3";
+        font-family: FontAwesome, "Source Sans 3", sans-serif;
         font-weight: 600;
     }
 
     .keyboard_tip::before {
         display: inline;
         content: "\f11c   Keyboard Shortcut:  ";
-        font-family: FontAwesome, Yantramanav, "Source Sans 3";
+        font-family: FontAwesome, "Source Sans 3", sans-serif;
         font-weight: 600;
     }
 
diff --git a/static/styles/portico/portico.css b/static/styles/portico/portico.css
index 69e9a38a7c..4d463a08b8 100644
--- a/static/styles/portico/portico.css
+++ b/static/styles/portico/portico.css
@@ -1,6 +1,6 @@
 body {
     background-color: hsl(0, 0%, 98%);
-    font-family: "Source Sans 3", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
     line-height: 150%;
     height: 100%;
     font-weight: 300;
@@ -274,7 +274,7 @@ html {
 }
 
 .title {
-    font-family: Helvetica;
+    font-family: Helvetica, sans-serif;
     font-size: 100px;
     font-weight: bold;
     margin-top: 50px;
@@ -1299,7 +1299,7 @@ input.new-organization-button {
     min-height: calc(100vh - 290px);
     height: 100%;
     background-color: hsl(163, 42%, 85%);
-    font-family: "Source Sans 3", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
 }
 
 .error_page .container {
diff --git a/static/styles/portico/portico_signin.css b/static/styles/portico/portico_signin.css
index 1ffb2f6c45..a5d0ba114b 100644
--- a/static/styles/portico/portico_signin.css
+++ b/static/styles/portico/portico_signin.css
@@ -323,7 +323,7 @@ html {
         vertical-align: top;
         padding: 13px 22px 13px 22px;
 
-        font-family: "Source Sans 3";
+        font-family: "Source Sans 3", sans-serif;
 
         font-size: 1.2rem;
         font-weight: 400;
@@ -404,7 +404,7 @@ html {
             padding: 10px 32px 10px 12px;
             margin: 25px 0 5px;
 
-            font-family: "Source Sans 3";
+            font-family: "Source Sans 3", sans-serif;
             font-size: 1.2rem;
             line-height: normal;
             height: auto;
diff --git a/static/styles/portico/stats.css b/static/styles/portico/stats.css
index ce978bbded..8386bf2596 100644
--- a/static/styles/portico/stats.css
+++ b/static/styles/portico/stats.css
@@ -1,5 +1,5 @@
 body {
-    font-family: "Source Sans 3", "Helvetica Neue", sans-serif !important;
+    font-family: "Source Sans 3", sans-serif !important;
     background-color: hsl(0, 0%, 98%);
 }
 
@@ -113,7 +113,7 @@ p {
 }
 
 .button {
-    font-family: "Source Sans 3", "Helvetica Neue", sans-serif !important;
+    font-family: "Source Sans 3", sans-serif !important;
     border: none;
     border-radius: 4px;
     outline: none;
diff --git a/static/styles/zulip.css b/static/styles/zulip.css
index 52d0386a62..ecc7196f7d 100644
--- a/static/styles/zulip.css
+++ b/static/styles/zulip.css
@@ -33,7 +33,7 @@ html {
 }
 
 body {
-    font-family: "Source Sans 3", "Helvetica Neue", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
 }
 
 /* Common background color */
@@ -47,7 +47,7 @@ input,
 button,
 select,
 textarea {
-    font-family: "Source Sans 3", "Helvetica Neue", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
     line-height: normal;
 }
 
@@ -379,7 +379,7 @@ p.n-margin {
 
 textarea,
 input {
-    font-family: "Source Sans 3", Helvetica, Arial, sans-serif;
+    font-family: "Source Sans 3", sans-serif;
 }
 
 /* Override Bootstrap's fixed sizes for various elements */
@@ -1800,7 +1800,7 @@ div.focused_table {
         padding-right: 20px;
         border: none;
         border-radius: 0;
-        font-family: "Source Sans 3";
+        font-family: "Source Sans 3", sans-serif;
         font-weight: 300;
         line-height: $header_height;
     }
diff --git a/stylelint.config.js b/stylelint.config.js
index 732339aca4..e93d6f45c2 100644
--- a/stylelint.config.js
+++ b/stylelint.config.js
@@ -5,9 +5,12 @@ module.exports = {
     rules: {
         // Add some exceptions for recommended rules
         "at-rule-no-unknown": [true, {ignoreAtRules: ["extend"]}],
+        "font-family-no-missing-generic-family-keyword": [
+            true,
+            {ignoreFontFamilies: ["FontAwesome"]},
+        ],
 
         // Disable recommended rules we don't comply with yet
-        "font-family-no-missing-generic-family-keyword": null,
         "no-descending-specificity": null,
 
         // Disable standard rules we don't comply with yet