diff --git a/CMakeLists.txt b/CMakeLists.txt
index c252d42dd9c..caa641ea78a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ endif()
 
 # Check for toolchain mismatch, user might need to rebuild toolchain
 set(GCC_VERSION "12.2.0")
-set(LLVM_VERSION "15.0.0")
+set(LLVM_VERSION "15.0.3")
 if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     set(EXPECTED_COMPILER_VERSION "${GCC_VERSION}")
 else()
diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index ebe589cb1bd..c604fc44bc6 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -142,7 +142,7 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 | [`libyaml`](libyaml/)                               | libyaml                                                         | 0.2.5                    | https://pyyaml.org/wiki/LibYAML                                                |
 | [`libzip`](libzip/)                                 | libzip                                                          | 1.8.0                    | https://libzip.org/                                                            |
 | [`links`](links/)                                   | Links web browser                                               | 2.26                     | http://links.twibright.com/                                                    |
-| [`llvm`](llvm/)                                     | LLVM                                                            | 15.0.0                   | https://llvm.org/                                                              |
+| [`llvm`](llvm/)                                     | LLVM                                                            | 15.0.3                   | https://llvm.org/                                                              |
 | [`lua`](lua/)                                       | Lua                                                             | 5.4.4                    | https://www.lua.org/                                                           |
 | [`luajit`](luajit/)                                 | LuaJIT                                                          | 2.1.0-beta3              | https://luajit.org/luajit.html                                                 |
 | [`luarocks`](luarocks/)                             | LuaRocks                                                        | 3.8.0                    | https://luarocks.org/                                                          |
diff --git a/Ports/llvm/package.sh b/Ports/llvm/package.sh
index a274972e347..791fedc00d1 100755
--- a/Ports/llvm/package.sh
+++ b/Ports/llvm/package.sh
@@ -1,11 +1,13 @@
 #!/usr/bin/env -S bash ../.port_include.sh
-port=llvm
-useconfigure=true
-version=15.0.0
-workdir=llvm-project-${version}.src
-configopts=("-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt")
-files="https://github.com/llvm/llvm-project/releases/download/llvmorg-${version}/llvm-project-${version}.src.tar.xz llvm-project-${version}.src.tar.xz caaf8100365b6ebafc39fea803e902ca3ff38b4d5327b9927097808d32964db7"
-auth_type=sha256
+port='llvm'
+useconfigure='true'
+version='15.0.3'
+workdir="llvm-project-${version}.src"
+configopts=(
+    "-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"
+)
+files="https://github.com/llvm/llvm-project/releases/download/llvmorg-${version}/llvm-project-${version}.src.tar.xz llvm-project-${version}.src.tar.xz dd07bdab557866344d85ae21bbeca5259d37b4b0e2ebf6e0481f42d1ba0fee88"
+auth_type='sha256'
 depends=(
     "ncurses"
     "zlib"
diff --git a/Toolchain/BuildClang.sh b/Toolchain/BuildClang.sh
index c9a73382b03..8fdbe4c313e 100755
--- a/Toolchain/BuildClang.sh
+++ b/Toolchain/BuildClang.sh
@@ -70,8 +70,8 @@ echo PREFIX is "$PREFIX"
 
 mkdir -p "$DIR/Tarballs"
 
-LLVM_VERSION="15.0.0"
-LLVM_MD5SUM="d17f527916cb07400e336f9ba4a28903"
+LLVM_VERSION="15.0.3"
+LLVM_MD5SUM="d435e1160fd16b8efe1e0f4d1058bd50"
 LLVM_NAME="llvm-project-$LLVM_VERSION.src"
 LLVM_PKG="$LLVM_NAME.tar.xz"
 LLVM_URL="https://github.com/llvm/llvm-project/releases/download/llvmorg-$LLVM_VERSION/$LLVM_PKG"