diff --git a/css/CSS2/css1/WEB_FEATURES.yml b/css/CSS2/css1/WEB_FEATURES.yml
index 1001feecb5e1d1..b33e02edf5801b 100644
--- a/css/CSS2/css1/WEB_FEATURES.yml
+++ b/css/CSS2/css1/WEB_FEATURES.yml
@@ -29,3 +29,6 @@ features:
 - name: font-size
   files:
   - c526-font-sz-*
+- name: font-style
+  files:
+  - c523-font-style-000.xht
diff --git a/css/CSS2/fonts/WEB_FEATURES.yml b/css/CSS2/fonts/WEB_FEATURES.yml
index 0f39582738b16c..eb482700fb786e 100644
--- a/css/CSS2/fonts/WEB_FEATURES.yml
+++ b/css/CSS2/fonts/WEB_FEATURES.yml
@@ -12,3 +12,6 @@ features:
 - name: font-family
   files:
   - font-family-*
+- name: font-style
+  files:
+  - font-style-*
diff --git a/css/css-fonts/WEB_FEATURES.yml b/css/css-fonts/WEB_FEATURES.yml
index 091fa963f4d0c4..861fc0512559a0 100644
--- a/css/css-fonts/WEB_FEATURES.yml
+++ b/css/css-fonts/WEB_FEATURES.yml
@@ -108,3 +108,8 @@ features:
 - name: font-shorthand
   files:
   - font-shorthand-*
+- name: font-style
+  files:
+  - font-style-*
+  - italic-oblique-fallback.html
+  - test-synthetic-italic*
diff --git a/css/css-fonts/animations/WEB_FEATURES.yml b/css/css-fonts/animations/WEB_FEATURES.yml
index 32fb3916e23bbe..4dabafb4d69e0d 100644
--- a/css/css-fonts/animations/WEB_FEATURES.yml
+++ b/css/css-fonts/animations/WEB_FEATURES.yml
@@ -11,6 +11,9 @@ features:
 - name: font-size-adjust
   files:
   - font-size-adjust-*
+- name: font-style
+  files:
+  - font-style-interpolation.html
 - name: font-weight
   files:
   - font-weight-composition.html
diff --git a/css/css-fonts/parsing/WEB_FEATURES.yml b/css/css-fonts/parsing/WEB_FEATURES.yml
index c4badfd5d583cd..06e7e075507ffa 100644
--- a/css/css-fonts/parsing/WEB_FEATURES.yml
+++ b/css/css-fonts/parsing/WEB_FEATURES.yml
@@ -70,3 +70,6 @@ features:
 - name: font-kerning
   files:
   - font-kerning-*
+- name: font-style
+  files:
+  - font-style-*
diff --git a/css/css-fonts/variations/WEB_FEATURES.yml b/css/css-fonts/variations/WEB_FEATURES.yml
index c035a0ee11b73d..245a7387f36fa3 100644
--- a/css/css-fonts/variations/WEB_FEATURES.yml
+++ b/css/css-fonts/variations/WEB_FEATURES.yml
@@ -2,3 +2,6 @@ features:
 - name: font-optical-sizing
   files:
   - variable-opsz*
+- name: font-style
+  files:
+  - font-slant-*
diff --git a/css/css-typed-om/the-stylepropertymap/properties/WEB_FEATURES.yml b/css/css-typed-om/the-stylepropertymap/properties/WEB_FEATURES.yml
index df416e22f86858..f153f8db0c930b 100644
--- a/css/css-typed-om/the-stylepropertymap/properties/WEB_FEATURES.yml
+++ b/css/css-typed-om/the-stylepropertymap/properties/WEB_FEATURES.yml
@@ -42,3 +42,6 @@ features:
 - name: text-overflow
   files:
   - text-overflow.html
+- name: font-style
+  files:
+  - font-style.html