diff --git a/compiler/src/scala/quoted/runtime/impl/QuoteContextImpl.scala b/compiler/src/scala/quoted/runtime/impl/QuoteContextImpl.scala
index f8d8fce8ba59..8c437b1832ff 100644
--- a/compiler/src/scala/quoted/runtime/impl/QuoteContextImpl.scala
+++ b/compiler/src/scala/quoted/runtime/impl/QuoteContextImpl.scala
@@ -2451,6 +2451,7 @@ class QuoteContextImpl private (using val ctx: Context) extends QuoteContext, Qu
       def Mutable: Flags = dotc.core.Flags.Mutable
       def Object: Flags = dotc.core.Flags.Module
       def Opaque: Flags = dotc.core.Flags.Opaque
+      def Open: Flags = dotc.core.Flags.Open
       def Override: Flags = dotc.core.Flags.Override
       def Package: Flags = dotc.core.Flags.Package
       def Param: Flags = dotc.core.Flags.Param
diff --git a/library/src/scala/quoted/QuoteContext.scala b/library/src/scala/quoted/QuoteContext.scala
index adf813f956b2..387583f11fba 100644
--- a/library/src/scala/quoted/QuoteContext.scala
+++ b/library/src/scala/quoted/QuoteContext.scala
@@ -3199,6 +3199,9 @@ trait QuoteContext { self: runtime.QuoteUnpickler & runtime.QuoteMatching =>
       /** Is this symbol `opaque` */
       def Opaque: Flags
 
+      /** Is this symbol `open` */
+      def Open: Flags
+
       /** Is this symbol `override` */
       def Override: Flags
 
diff --git a/scala3doc/src/dotty/dokka/tasty/SymOps.scala b/scala3doc/src/dotty/dokka/tasty/SymOps.scala
index 0b36d49b8f47..d4843c3a4ae2 100644
--- a/scala3doc/src/dotty/dokka/tasty/SymOps.scala
+++ b/scala3doc/src/dotty/dokka/tasty/SymOps.scala
@@ -47,13 +47,6 @@ class SymOps[Q <: QuoteContext](val q: Q):
         case (None, None, (false, false, false)) => Visibility.Unrestricted
         case _ => throw new Exception(s"Visibility for symbol $sym cannot be determined")
 
-    // TODO: #49 Remove it after TASTY-Reflect release with published flag Extension
-    def hackIsOpen: Boolean = {
-      import dotty.tools.dotc
-      given dotc.core.Contexts.Context = qctx.asInstanceOf[scala.quoted.runtime.impl.QuoteContextImpl].ctx
-      val symbol = sym.asInstanceOf[dotc.core.Symbols.Symbol]
-      symbol.is(dotc.core.Flags.Open)
-    }
 
     // Order here determines order in documenation
     def getExtraModifiers(): Seq[Modifier] = Seq(
@@ -64,10 +57,10 @@ class SymOps[Q <: QuoteContext](val q: Q):
         Flags.Implicit -> Modifier.Implicit,
         Flags.Inline -> Modifier.Inline,
         Flags.Lazy -> Modifier.Lazy,
+        Flags.Open -> Modifier.Open,
         Flags.Override -> Modifier.Override,
         Flags.Case -> Modifier.Case,
         ).collect { case (flag, mod) if sym.flags.is(flag) => mod }
-          ++ (if(sym.hackIsOpen) Seq(Modifier.Open) else Nil)
 
     def isHiddenByVisibility: Boolean =
       import VisibilityScope._