diff --git a/Userland/Libraries/LibWeb/CSS/Identifiers.json b/Userland/Libraries/LibWeb/CSS/Identifiers.json
index 391f5036233..65f1753af48 100644
--- a/Userland/Libraries/LibWeb/CSS/Identifiers.json
+++ b/Userland/Libraries/LibWeb/CSS/Identifiers.json
@@ -116,6 +116,7 @@
   "hidden",
   "inline",
   "inline-block",
+  "inline-flex",
   "inline-table",
   "inset",
   "inside",
diff --git a/Userland/Libraries/LibWeb/CSS/Properties.json b/Userland/Libraries/LibWeb/CSS/Properties.json
index 5a056133fe1..9bb799a67e8 100644
--- a/Userland/Libraries/LibWeb/CSS/Properties.json
+++ b/Userland/Libraries/LibWeb/CSS/Properties.json
@@ -571,6 +571,7 @@
       "flex",
       "inline",
       "inline-block",
+      "inline-flex",
       "inline-table",
       "list-item",
       "none",
diff --git a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
index 5a998edce0c..9575ddf1388 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
@@ -631,6 +631,8 @@ CSS::Display StyleProperties::display() const
         return CSS::Display { CSS::Display::Internal::TableFooterGroup };
     case CSS::ValueID::Flex:
         return CSS::Display::from_short(CSS::Display::Short::Flex);
+    case CSS::ValueID::InlineFlex:
+        return CSS::Display::from_short(CSS::Display::Short::InlineFlex);
     default:
         return CSS::Display::from_short(CSS::Display::Short::Block);
     }