diff --git a/.github/workflows/libclang-alpine-amd64.yml b/.github/workflows/libclang-alpine-amd64.yml
index f4dc7fb..75e1a5b 100644
--- a/.github/workflows/libclang-alpine-amd64.yml
+++ b/.github/workflows/libclang-alpine-amd64.yml
@@ -3,7 +3,7 @@ name: libclang-alpine-amd64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/.github/workflows/libclang-linux-aarch64.yml b/.github/workflows/libclang-linux-aarch64.yml
index 315fc5b..b504328 100644
--- a/.github/workflows/libclang-linux-aarch64.yml
+++ b/.github/workflows/libclang-linux-aarch64.yml
@@ -3,7 +3,7 @@ name: libclang-linux-aarch64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/.github/workflows/libclang-linux-amd64.yml b/.github/workflows/libclang-linux-amd64.yml
index 43f7c9c..a084f04 100644
--- a/.github/workflows/libclang-linux-amd64.yml
+++ b/.github/workflows/libclang-linux-amd64.yml
@@ -3,7 +3,7 @@ name: libclang-linux-amd64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
@@ -69,3 +69,36 @@ jobs:
         password: ${{ secrets.PYPI_TOKEN }}
         verbose: true
         print_hash: true
+
+  build-and-deploy-sdist:
+    if: "!contains(github.event.head_commit.message, 'skip ci')"
+    runs-on: ubuntu-20.04
+    needs: [build-and-deploy]
+    steps:
+    - uses: actions/checkout@v3
+    - uses: actions/setup-python@v4
+      with:
+        python-version: '3.10'
+    - name: install wheel dependencies
+      run: |
+        pip3 install wheel
+    - name: get llvm-project
+      run: |
+        wget https://github.com/llvm/llvm-project/releases/download/llvmorg-$LLVM_VER/llvm-project-$LLVM_VER.src.tar.xz
+        tar xf llvm-project-$LLVM_VER.src.tar.xz
+        mv llvm-project-$LLVM_VER.src llvm-project-$LLVM_VER
+    - name: generate wheel package
+      run: |
+        python3 setup.py sdist
+    - uses: actions/upload-artifact@v3
+      with:
+        name: wheel-${{env.LLVM_VER}}-sdist
+        path: dist/*.tar.gz
+    - name: Publish to PyPI
+      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
+      uses: pypa/gh-action-pypi-publish@release/v1
+      with:
+        packages_dir: dist/
+        password: ${{ secrets.PYPI_TOKEN }}
+        verbose: true
+        print_hash: true
diff --git a/.github/workflows/libclang-linux-arm.yml b/.github/workflows/libclang-linux-arm.yml
index 29a11c5..7b431a4 100644
--- a/.github/workflows/libclang-linux-arm.yml
+++ b/.github/workflows/libclang-linux-arm.yml
@@ -3,7 +3,7 @@ name: libclang-linux-arm
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/.github/workflows/libclang-macosx-amd64.yml b/.github/workflows/libclang-macosx-amd64.yml
index eac4646..664d740 100644
--- a/.github/workflows/libclang-macosx-amd64.yml
+++ b/.github/workflows/libclang-macosx-amd64.yml
@@ -3,7 +3,7 @@ name: libclang-macosx-amd64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/.github/workflows/libclang-sdist.yml b/.github/workflows/libclang-sdist.yml
deleted file mode 100644
index dc21061..0000000
--- a/.github/workflows/libclang-sdist.yml
+++ /dev/null
@@ -1,43 +0,0 @@
-name: libclang-sdist
-
-on: [push, pull_request]
-
-env:
-  LLVM_VER: 15.0.3
-
-concurrency:
-  group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
-  cancel-in-progress: true
-
-jobs:
-  build-and-deploy:
-    if: "!contains(github.event.head_commit.message, 'skip ci')"
-    runs-on: ubuntu-20.04
-    steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-python@v4
-      with:
-        python-version: '3.10'
-    - name: install wheel dependencies
-      run: |
-        pip3 install wheel
-    - name: get llvm-project
-      run: |
-        wget https://github.com/llvm/llvm-project/releases/download/llvmorg-$LLVM_VER/llvm-project-$LLVM_VER.src.tar.xz
-        tar xf llvm-project-$LLVM_VER.src.tar.xz
-        mv llvm-project-$LLVM_VER.src llvm-project-$LLVM_VER
-    - name: generate wheel package
-      run: |
-        python3 setup.py sdist
-    - uses: actions/upload-artifact@v3
-      with:
-        name: wheel-${{env.LLVM_VER}}-manylinux1_x86_64
-        path: dist/*.tar.gz
-    - name: Publish to PyPI
-      if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-      uses: pypa/gh-action-pypi-publish@release/v1
-      with:
-        packages_dir: dist/
-        password: ${{ secrets.PYPI_TOKEN }}
-        verbose: true
-        print_hash: true
diff --git a/.github/workflows/libclang-windows-aarch64.yml b/.github/workflows/libclang-windows-aarch64.yml
index 9c3b119..9f5e6eb 100644
--- a/.github/workflows/libclang-windows-aarch64.yml
+++ b/.github/workflows/libclang-windows-aarch64.yml
@@ -3,7 +3,7 @@ name: libclang-windows-aarch64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/.github/workflows/libclang-windows-amd64.yml b/.github/workflows/libclang-windows-amd64.yml
index 3dd6e12..32f8b6c 100644
--- a/.github/workflows/libclang-windows-amd64.yml
+++ b/.github/workflows/libclang-windows-amd64.yml
@@ -3,7 +3,7 @@ name: libclang-windows-amd64
 on: [push, pull_request]
 
 env:
-  LLVM_VER: 15.0.3
+  LLVM_VER: 15.0.6
 
 concurrency:
   group: ${{ github.repository }}-${{ github.head_ref || github.sha }}-${{ github.workflow }}
diff --git a/docs/conf.py b/docs/conf.py
index 33f68b5..aed67f7 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -63,9 +63,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = '15.0.3'
+version = '15.0.6'
 # The full version, including alpha/beta/rc tags.
-release = '15.0.3'
+release = '15.0.6'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/docs/index.rst b/docs/index.rst
index 02b6a1e..eb48941 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -1,5 +1,5 @@
 :Date: 2021-04-17
-:Version: 15.0.3
+:Version: 15.0.6
 :Authors: - The LLVM Team
 
 .. meta::
diff --git a/python/clang/cindex.py b/python/clang/cindex.py
index bca647b..1ae8aa7 100644
--- a/python/clang/cindex.py
+++ b/python/clang/cindex.py
@@ -1084,7 +1084,6 @@ def __repr__(self):
 # Represents an @available(...) check.
 CursorKind.OBJC_AVAILABILITY_CHECK_EXPR = CursorKind(148)
 
-
 # Fixed point literal
 CursorKind.FIXED_POINT_LITERAL = CursorKind(149)
 
@@ -1097,6 +1096,12 @@ def __repr__(self):
 # OpenCL's addrspace_cast<> expression.
 CursorKind.CXX_ADDRSPACE_CAST_EXPR = CursorKind(152)
 
+# Expression that references a C++20 concept.
+CursorKind.CONCEPT_SPECIALIZATION_EXPR = CursorKind(153)
+
+# Expression that references a C++20 concept.
+CursorKind.REQUIRES_EXPR = CursorKind(154)
+
 # A statement whose specific kind is not exposed via this interface.
 #
 # Unexposed statements have the same operations as any other kind of statement;
@@ -1398,6 +1403,24 @@ def __repr__(self):
 # OpenMP parallel loop directive.
 CursorKind.OMP_PARALLEL_GENERIC_LOOP_DIRECTIVE = CursorKind(298)
 
+# OpenMP target parallel loop directive.
+CursorKind.OMP_TARGET_PARALLEL_GENERIC_LOOP_DIRECTIVE = CursorKind(299)
+
+# OpenMP parallel masked directive.
+CursorKind.OMP_PARALLEL_MASKED_DIRECTIVE = CursorKind(300)
+
+# OpenMP masked taskloop directive.
+CursorKind.OMP_MASKED_TASK_LOOP_DIRECTIVE = CursorKind(301)
+
+# OpenMP masked taskloop simd directive.
+CursorKind.OMP_MASKED_TASK_LOOP_SIMD_DIRECTIVE = CursorKind(302)
+
+# OpenMP parallel masked taskloop directive.
+CursorKind.OMP_PARALLEL_MASKED_TASK_LOOP_DIRECTIVE = CursorKind(303)
+
+# OpenMP parallel masked taskloop simd directive.
+CursorKind.OMP_PARALLEL_MASKED_TASK_LOOP_SIMD_DIRECTIVE = CursorKind(304)
+
 ###
 # Other Kinds
 
@@ -1405,7 +1428,7 @@ def __repr__(self):
 #
 # The translation unit cursor exists primarily to act as the root cursor for
 # traversing the contents of a translation unit.
-CursorKind.TRANSLATION_UNIT = CursorKind(300)
+CursorKind.TRANSLATION_UNIT = CursorKind(350)
 
 ###
 # Attributes
@@ -1520,9 +1543,9 @@ def from_location(tu, location):
         cursor._tu = tu
 
         return cursor
-      
+
     def __hash__(self):
-      return self.hash
+-       return self.hash
 
     def __eq__(self, other):
         return conf.lib.clang_equalCursors(self, other)
diff --git a/setup.py b/setup.py
index 9f1d8ad..da98682 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 
 setup(
     name='libclang',
-    version='15.0.3',
+    version='15.0.6',
     description='Clang Python Bindings, mirrored from the official LLVM repo: https://github.com/llvm/llvm-project/tree/main/clang/bindings/python, to make the installation process easier.',
     long_description=long_description,
     long_description_content_type='text/markdown',
diff --git a/setup_ext.py b/setup_ext.py
index 130b76b..28cc1b8 100644
--- a/setup_ext.py
+++ b/setup_ext.py
@@ -54,7 +54,7 @@ def run(self):
 
 setup(
     name='libclang',
-    version='15.0.3',
+    version='15.0.6',
     description='Clang Python Bindings, mirrored from the official LLVM repo: https://github.com/llvm/llvm-project/tree/main/clang/bindings/python, to make the installation process easier.',
     long_description=long_description,
     long_description_content_type='text/markdown',