diff --git a/0001-Port-to-LLVM-Clang-Git-release-18.x-as-of-2024-02-05.patch b/0001-Port-to-LLVM-Clang-Git-release-18.x-as-of-2024-02-05.patch
deleted file mode 100644
index 7846941..0000000
--- a/0001-Port-to-LLVM-Clang-Git-release-18.x-as-of-2024-02-05.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From 5e0db6780b264baba5639ec11c5823787661c318 Mon Sep 17 00:00:00 2001
-From: Brad King <brad.king@kitware.com>
-Date: Mon, 5 Feb 2024 11:31:17 -0500
-Subject: [PATCH] Port to LLVM/Clang Git release/18.x as of 2024-02-05
- (900e7cbfdee)
-
-`isPure` was renamed to `isPureVirtual`.
----
- src/Output.cxx | 10 +++++++---
- 1 file changed, 7 insertions(+), 3 deletions(-)
-
-diff --git a/src/Output.cxx b/src/Output.cxx
-index 6086c04..5d15caa 100644
---- a/src/Output.cxx
-+++ b/src/Output.cxx
-@@ -93,6 +93,10 @@ using OptionalFileEntryRef = clang::FileEntry const*;
- #include <string>
- #include <vector>
- 
-+#if LLVM_VERSION_MAJOR < 18
-+#  define isPureVirtual isPure
-+#endif
-+
- class ASTVisitorBase
- {
- protected:
-@@ -2282,7 +2286,7 @@ void ASTVisitor::OutputCXXMethodDecl(clang::CXXMethodDecl const* d,
-   if (d->isVirtual()) {
-     flags |= FH_Virtual;
-   }
--  if (d->isPure()) {
-+  if (d->isPureVirtual()) {
-     flags |= FH_Pure;
-   }
-   if (d->isOverloadedOperator()) {
-@@ -2312,7 +2316,7 @@ void ASTVisitor::OutputCXXConversionDecl(clang::CXXConversionDecl const* d,
-   if (d->isVirtual()) {
-     flags |= FH_Virtual;
-   }
--  if (d->isPure()) {
-+  if (d->isPureVirtual()) {
-     flags |= FH_Pure;
-   }
-   this->OutputFunctionHelper(d, dn, "Converter", flags);
-@@ -2348,7 +2352,7 @@ void ASTVisitor::OutputCXXDestructorDecl(clang::CXXDestructorDecl const* d,
-   if (d->isVirtual()) {
-     flags |= FH_Virtual;
-   }
--  if (d->isPure()) {
-+  if (d->isPureVirtual()) {
-     flags |= FH_Pure;
-   }
-   this->OutputFunctionHelper(d, dn, "Destructor", flags,
--- 
-2.44.0
-
diff --git a/CastXML-0.6.4.tar.gz b/CastXML-0.6.4.tar.gz
deleted file mode 100644
index d304122..0000000
--- a/CastXML-0.6.4.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:86d02c7ed743122ce8c6d888c643da92fb7515da04577a933d33180fb7731872
-size 121583
diff --git a/CastXML-0.6.5.tar.gz b/CastXML-0.6.5.tar.gz
new file mode 100644
index 0000000..a2e87fb
--- /dev/null
+++ b/CastXML-0.6.5.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:fea4754bdb1fb4496fec12352e2bd07854843aa757e85d0553f224ff0111c482
+size 121667
diff --git a/CastXML.changes b/CastXML.changes
index e11752f..0368756 100644
--- a/CastXML.changes
+++ b/CastXML.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Sun Apr 14 08:33:03 UTC 2024 - Atri Bhattacharya <badshah400@gmail.com>
+
+- Update to version 0.6.5:
+  * LLVM 18 compatibility.
+- Drop upstream incorporated patch:
+  0001-Port-to-LLVM-Clang-Git-release-18.x-as-of-2024-02-05.patch
+
 -------------------------------------------------------------------
 Thu Mar 21 14:21:26 UTC 2024 - Christophe Marin <christophe@krop.fr>
 
diff --git a/CastXML.spec b/CastXML.spec
index 2cfca46..848a5a8 100644
--- a/CastXML.spec
+++ b/CastXML.spec
@@ -17,15 +17,13 @@
 
 
 Name:           CastXML
-Version:        0.6.4
+Version:        0.6.5
 Release:        0
 Summary:        C-family Abstract Syntax Tree XML Output
 License:        Apache-2.0
 URL:            https://github.com/CastXML/CastXML
-Source0:        https://github.com/CastXML/%{name}/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Source0:        %{url}/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 Source1:        %{name}-rpmlintrc
-# PATCH-FIX-UPSTREAM
-Patch0:         0001-Port-to-LLVM-Clang-Git-release-18.x-as-of-2024-02-05.patch
 BuildRequires:  clang-devel
 BuildRequires:  cmake
 BuildRequires:  fdupes