diff --git a/blueprintcompiler/ast.py b/blueprintcompiler/ast.py
index 6525a54..fc447f3 100644
--- a/blueprintcompiler/ast.py
+++ b/blueprintcompiler/ast.py
@@ -281,6 +281,8 @@ class Property(AstNode):
             bind_flags.append("sync-create")
         if self.tokens["after"]:
             bind_flags.append("after")
+        if self.tokens["bidirectional"]:
+            bind_flags.append("bidirectional")
         bind_flags_str = "|".join(bind_flags) or None
 
         props = {
diff --git a/blueprintcompiler/decompiler.py b/blueprintcompiler/decompiler.py
index 59735bb..32d3239 100644
--- a/blueprintcompiler/decompiler.py
+++ b/blueprintcompiler/decompiler.py
@@ -283,6 +283,8 @@ def decompile_property(ctx, gir, name, cdata, bind_source=None, bind_property=No
                 flags += " sync-create"
             if "after" in bind_flags:
                 flags += " after"
+            if "bidirectional" in bind_flags:
+                flags += " bidirectional"
         ctx.print(f"{name}: bind {bind_source}.{bind_property}{flags};")
     elif _truthy(translatable):
         if context is not None:
diff --git a/blueprintcompiler/parser.py b/blueprintcompiler/parser.py
index 9ac3fdf..a802df0 100644
--- a/blueprintcompiler/parser.py
+++ b/blueprintcompiler/parser.py
@@ -77,6 +77,7 @@ def parse(tokens) -> T.Tuple[ast.UI, T.Optional[MultipleErrors]]:
             ZeroOrMore(AnyOf(
                 Sequence(Keyword("sync-create"), UseLiteral("sync_create", True)),
                 Sequence(Keyword("after"), UseLiteral("after", True)),
+                Sequence(Keyword("bidirectional"), UseLiteral("bidirectional", True)),
             )),
         )
     )