diff --git a/ports/llvm-15/0025-PASTA-patches.patch b/ports/llvm-15/0025-PASTA-patches.patch
index 45b8a0e8..56c49d7e 100644
--- a/ports/llvm-15/0025-PASTA-patches.patch
+++ b/ports/llvm-15/0025-PASTA-patches.patch
@@ -1,4 +1,4 @@
-From e662db370ffe95bc663d1e1fa350ab3c35bd61b3 Mon Sep 17 00:00:00 2001
+From a2055c89f23ad44059dd11a91387e69fdb1cd5e0 Mon Sep 17 00:00:00 2001
 From: Peter Goodman <peter.goodman@gmail.com>
 Date: Mon, 14 Nov 2022 14:51:27 -0500
 Subject: [PATCH] Patches for PASTA
@@ -16,7 +16,8 @@ Subject: [PATCH] Patches for PASTA
  clang/lib/Lex/Preprocessor.cpp         |  43 +++-
  clang/lib/Lex/TokenLexer.cpp           |  39 +++-
  clang/lib/Parse/ParseTemplate.cpp      |   7 +
- 12 files changed, 730 insertions(+), 79 deletions(-)
+ clang/lib/Sema/SemaDecl.cpp            |   5 +
+ 13 files changed, 735 insertions(+), 79 deletions(-)
 
 diff --git a/clang/include/clang/Lex/PPCallbacks.h b/clang/include/clang/Lex/PPCallbacks.h
 index 045df8711..cba195cff 100644
@@ -1637,6 +1638,22 @@ index e32ea6003..942c71526 100644
    // Update the token cache to match what we just did if necessary.
    if (CachingTokens) {
      // If the previous cached token is being merged, delete it.
+diff --git a/clang/lib/Sema/SemaDecl.cpp b/clang/lib/Sema/SemaDecl.cpp
+index 75ffa8b0a..f4d175de2 100644
+--- a/clang/lib/Sema/SemaDecl.cpp
++++ b/clang/lib/Sema/SemaDecl.cpp
+@@ -6261,6 +6261,11 @@ NamedDecl *Sema::HandleDeclarator(Scope *S, Declarator &D,
+       Previous.setRedeclarationKind(ForExternalRedeclaration);
+     }
+ 
++    // PASTA PATCH: Disable auto-creation of builtins from things like `atoi`;
++    //              it ends up leading to a lot of source location information
++    //              being dropped.
++    CreateBuiltins = CreateBuiltins ? false : false;
++
+     LookupName(Previous, S, CreateBuiltins);
+   } else { // Something like "int foo::x;"
+     LookupQualifiedName(Previous, DC);
 -- 
 2.39.0
 
diff --git a/ports/llvm-15/vcpkg.json b/ports/llvm-15/vcpkg.json
index 8045b298..86d509c0 100644
--- a/ports/llvm-15/vcpkg.json
+++ b/ports/llvm-15/vcpkg.json
@@ -1,6 +1,7 @@
 {
   "name": "llvm-15",
   "version": "15.0.7",
+  "port-version": 1,
   "description": "The LLVM Compiler Infrastructure.",
   "homepage": "https://llvm.org",
   "license": "Apache-2.0",
diff --git a/ports/z3/portfile.cmake b/ports/z3/portfile.cmake
index bbc0cb3f..be2469e0 100644
--- a/ports/z3/portfile.cmake
+++ b/ports/z3/portfile.cmake
@@ -5,8 +5,8 @@ vcpkg_add_to_path("${PYTHON3_DIR}")
 vcpkg_from_github(
   OUT_SOURCE_PATH SOURCE_PATH
   REPO Z3Prover/z3
-  REF z3-4.12.0
-  SHA512 53a51c8304fa4356d13293f68b14d9d9eef57a0771c6698d38aea5fac62c4e52c41ff003cb6d771a32645d2aa4ef59be5f792f2efbee927d06ac8280094976e5
+  REF z3-4.12.1
+  SHA512 031fba9cc000a8da0025f95fa3f1c7519071d1b7775b377ff3192c505bb4c7e3d267da246c9ae68c940224e055a3c30571d2c0d7fbb042ec9a3d5849543a385c
   HEAD_REF master
   PATCHES
       fix-install-path.patch
diff --git a/ports/z3/remove-flag-overrides.patch b/ports/z3/remove-flag-overrides.patch
index 4a6c07dd..2b051546 100644
--- a/ports/z3/remove-flag-overrides.patch
+++ b/ports/z3/remove-flag-overrides.patch
@@ -7,6 +7,6 @@ index 477410ba8..fcca03917 100644
  cmake_minimum_required(VERSION 3.4)
  
 -set(CMAKE_USER_MAKE_RULES_OVERRIDE_CXX "${CMAKE_CURRENT_SOURCE_DIR}/cmake/cxx_compiler_flags_overrides.cmake")
- project(Z3 VERSION 4.12.0.0 LANGUAGES CXX)
+ project(Z3 VERSION 4.12.1.0 LANGUAGES CXX)
  
  ################################################################################
diff --git a/ports/z3/vcpkg.json b/ports/z3/vcpkg.json
index 08fbffa0..3e64e432 100644
--- a/ports/z3/vcpkg.json
+++ b/ports/z3/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "z3",
-  "version": "4.12.0",
+  "version": "4.12.1",
   "description": "Z3 is a theorem prover from Microsoft Research",
   "homepage": "https://github.com/Z3Prover/z3",
   "license": "MIT",