diff --git a/clang/lib/Sema/SemaConcept.cpp b/clang/lib/Sema/SemaConcept.cpp
--- a/clang/lib/Sema/SemaConcept.cpp
+++ b/clang/lib/Sema/SemaConcept.cpp
@@ -293,6 +293,10 @@
 
   MultiLevelTemplateArgumentList MLTAL;
   MLTAL.addOuterTemplateArguments(TemplateArgs);
+  if (const TypeAliasTemplateDecl *AliasTemplate =
+          dyn_cast_or_null<TypeAliasTemplateDecl>(Template)) {
+    MLTAL.addOuterRetainedLevels(AliasTemplate->getTemplateDepth());
+  }
 
   for (const Expr *ConstraintExpr : ConstraintExprs) {
     if (calculateConstraintSatisfaction(S, Template, TemplateArgs,
diff --git a/clang/test/SemaCXX/template-member-alias-constraint.cpp b/clang/test/SemaCXX/template-member-alias-constraint.cpp
new file mode 100644
--- /dev/null
+++ b/clang/test/SemaCXX/template-member-alias-constraint.cpp
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 %s -std=c++20 -fsyntax-only -verify
+
+template <typename T>
+concept Foo = true;
+
+template <typename T, typename U>
+struct Bar {};
+
+template <typename T>
+struct Baz {
+  template <Foo U>
+  using BazBar = Bar<T, U>;
+
+  using BazBarInt = BazBar<int>; // expected-no-diagnostics
+};
+
+template <typename urng_t>
+struct contiguous_range {
+  template <bool const_range>
+    requires(const_range == false)
+  using basic_iterator = int;
+
+  auto begin() {
+    return basic_iterator<false>{}; // expected-no-diagnostics
+  }
+};