diff --git a/docs/examples.rst b/docs/examples.rst
index c3100cc..27617c3 100644
--- a/docs/examples.rst
+++ b/docs/examples.rst
@@ -199,7 +199,7 @@ Basic Usage
 .. code-block::
 
    Gtk.Label {
-     style "dim-label", "title";
+     styles: ["dim-label", "title"];
    }
 
 
diff --git a/gtkblueprinttool/extensions/gtk_file_filter.py b/gtkblueprinttool/extensions/gtk_file_filter.py
index a6dfaf6..90a23f3 100644
--- a/gtkblueprinttool/extensions/gtk_file_filter.py
+++ b/gtkblueprinttool/extensions/gtk_file_filter.py
@@ -49,6 +49,7 @@ def create_node(tag_name: str, singular: str):
             Keyword(tag_name),
             UseLiteral("tag_name", tag_name),
             Op(":"),
+            OpenBracket(),
             Delimited(
                 Group(
                     FilterString,
@@ -59,6 +60,7 @@ def create_node(tag_name: str, singular: str):
                 ),
                 Comma(),
             ),
+            CloseBracket(),
         )
     )
 
@@ -75,7 +77,7 @@ suffixes = create_node("suffixes", "suffix")
 def file_filter_completer(ast_node, match_variables):
     file_filter = ast_node.root.gir.get_type("FileFilter", "Gtk")
     if ast_node.gir_class and ast_node.gir_class.assignable_to(file_filter):
-        yield Completion("mime-types", CompletionItemKind.Snippet, snippet="mime-types \"$0\";")
-        yield Completion("patterns", CompletionItemKind.Snippet, snippet="patterns \"$0\";")
-        yield Completion("suffixes", CompletionItemKind.Snippet, snippet="suffixes \"$0\";")
+        yield Completion("mime-types", CompletionItemKind.Snippet, snippet="mime-types: [\"$0\"];")
+        yield Completion("patterns", CompletionItemKind.Snippet, snippet="patterns: [\"$0\"];")
+        yield Completion("suffixes", CompletionItemKind.Snippet, snippet="suffixes: [\"$0\"];")
 
diff --git a/gtkblueprinttool/extensions/gtk_styles.py b/gtkblueprinttool/extensions/gtk_styles.py
index 5c9cd21..17a7b89 100644
--- a/gtkblueprinttool/extensions/gtk_styles.py
+++ b/gtkblueprinttool/extensions/gtk_styles.py
@@ -43,7 +43,9 @@ class StyleClass(AstNode):
 styles = Group(
     Styles,
     Statement(
-        Keyword("style"),
+        Keyword("styles"),
+        Op(":"),
+        OpenBracket(),
         Delimited(
             Group(
                 StyleClass,
@@ -51,6 +53,7 @@ styles = Group(
             ),
             Comma(),
         ),
+        CloseBracket(),
     )
 )
 
@@ -60,5 +63,5 @@ styles = Group(
     matches=new_statement_patterns,
 )
 def style_completer(ast_node, match_variables):
-    yield Completion("style", CompletionItemKind.Keyword, snippet="style \"$0\";")
+    yield Completion("styles", CompletionItemKind.Keyword, snippet="styles: [\"$0\"];")
 
diff --git a/tests/samples/file_filter.blp b/tests/samples/file_filter.blp
index 1164434..8c91014 100644
--- a/tests/samples/file_filter.blp
+++ b/tests/samples/file_filter.blp
@@ -2,7 +2,7 @@ using Gtk 4.0;
 
 FileFilter {
   name: "File Filter Name";
-  mime-types: "text/plain", "image/ *";
-  patterns: "*.txt";
-  suffixes: "png";
+  mime-types: ["text/plain", "image/ *"];
+  patterns: ["*.txt"];
+  suffixes: ["png"];
 }
diff --git a/tests/samples/style.blp b/tests/samples/style.blp
index 6d47e49..fc3f023 100644
--- a/tests/samples/style.blp
+++ b/tests/samples/style.blp
@@ -1,5 +1,5 @@
 using Gtk 4.0;
 
 Label {
-  style "class-1", "class-2";
+  styles: ["class-1", "class-2"];
 }