diff --git a/Libraries/LibWeb/CSS/Properties.json b/Libraries/LibWeb/CSS/Properties.json
index 52543c26784..d16b6e369fd 100644
--- a/Libraries/LibWeb/CSS/Properties.json
+++ b/Libraries/LibWeb/CSS/Properties.json
@@ -62,6 +62,21 @@
   "-webkit-border-top-right-radius": {
     "legacy-alias-for": "border-top-right-radius"
   },
+  "-webkit-box-align": {
+    "legacy-alias-for": "align-items"
+  },
+  "-webkit-box-flex": {
+    "legacy-alias-for": "flex-grow"
+  },
+  "-webkit-box-ordinal-group": {
+    "legacy-alias-for": "order"
+  },
+  "-webkit-box-orient": {
+    "legacy-alias-for": "flex-direction"
+  },
+  "-webkit-box-pack": {
+    "legacy-alias-for": "justify-content"
+  },
   "-webkit-box-shadow": {
     "legacy-alias-for": "box-shadow"
   },
@@ -2127,7 +2142,7 @@
     "__comment": "FIXME: add longhands mask-clip, mask-composite, mask-mode, mask-origin, mask-position, mask-repeat, mask-size; also reset mask-border",
     "initial": "none",
     "longhands": [
-        "mask-image"
+      "mask-image"
     ]
   },
   "mask-image": {
diff --git a/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt b/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
index f77174bb2c6..edf19737e8c 100644
--- a/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
+++ b/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
@@ -63,6 +63,21 @@ All supported properties and their default values exposed from CSSStylePropertie
 'WebkitBorderTopRightRadius': '0px'
 'webkitBorderTopRightRadius': '0px'
 '-webkit-border-top-right-radius': '0px'
+'WebkitBoxAlign': 'normal'
+'webkitBoxAlign': 'normal'
+'-webkit-box-align': 'normal'
+'WebkitBoxFlex': '0'
+'webkitBoxFlex': '0'
+'-webkit-box-flex': '0'
+'WebkitBoxOrdinalGroup': '0'
+'webkitBoxOrdinalGroup': '0'
+'-webkit-box-ordinal-group': '0'
+'WebkitBoxOrient': 'row'
+'webkitBoxOrient': 'row'
+'-webkit-box-orient': 'row'
+'WebkitBoxPack': 'normal'
+'webkitBoxPack': 'normal'
+'-webkit-box-pack': 'normal'
 'WebkitBoxShadow': 'none'
 'webkitBoxShadow': 'none'
 '-webkit-box-shadow': 'none'