diff --git a/.azure-pipelines/azure-pipelines-osx.yml b/.azure-pipelines/azure-pipelines-osx.yml
index 4a3ff83..f1de6cc 100755
--- a/.azure-pipelines/azure-pipelines-osx.yml
+++ b/.azure-pipelines/azure-pipelines-osx.yml
@@ -5,7 +5,7 @@
 jobs:
 - job: osx
   pool:
-    vmImage: macOS-11
+    vmImage: macOS-12
   strategy:
     matrix:
       osx_64_python3.10.____cpythonpython_implcpython:
diff --git a/.ci_support/osx_64_python3.10.____cpythonpython_implcpython.yaml b/.ci_support/osx_64_python3.10.____cpythonpython_implcpython.yaml
index 3bf4872..b5db179 100644
--- a/.ci_support/osx_64_python3.10.____cpythonpython_implcpython.yaml
+++ b/.ci_support/osx_64_python3.10.____cpythonpython_implcpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_64_python3.11.____cpythonpython_implcpython.yaml b/.ci_support/osx_64_python3.11.____cpythonpython_implcpython.yaml
index 99de619..52a85fc 100644
--- a/.ci_support/osx_64_python3.11.____cpythonpython_implcpython.yaml
+++ b/.ci_support/osx_64_python3.11.____cpythonpython_implcpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_64_python3.12.____cpythonpython_implcpython.yaml b/.ci_support/osx_64_python3.12.____cpythonpython_implcpython.yaml
index b8bbff3..b612872 100644
--- a/.ci_support/osx_64_python3.12.____cpythonpython_implcpython.yaml
+++ b/.ci_support/osx_64_python3.12.____cpythonpython_implcpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_64_python3.8.____cpythonpython_implcpython.yaml b/.ci_support/osx_64_python3.8.____cpythonpython_implcpython.yaml
index e0f73bf..54c74cc 100644
--- a/.ci_support/osx_64_python3.8.____cpythonpython_implcpython.yaml
+++ b/.ci_support/osx_64_python3.8.____cpythonpython_implcpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_64_python3.9.____73_pypypython_implpypy.yaml b/.ci_support/osx_64_python3.9.____73_pypypython_implpypy.yaml
index 0d868a0..78f25bf 100644
--- a/.ci_support/osx_64_python3.9.____73_pypypython_implpypy.yaml
+++ b/.ci_support/osx_64_python3.9.____73_pypypython_implpypy.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_64_python3.9.____cpythonpython_implcpython.yaml b/.ci_support/osx_64_python3.9.____cpythonpython_implcpython.yaml
index a1a8ea7..8b93c0c 100644
--- a/.ci_support/osx_64_python3.9.____cpythonpython_implcpython.yaml
+++ b/.ci_support/osx_64_python3.9.____cpythonpython_implcpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
-- '10.9'
+- '10.13'
+MACOSX_SDK_VERSION:
+- '10.13'
 c_compiler:
 - clang
 c_compiler_version:
@@ -7,7 +9,7 @@ c_compiler_version:
 c_stdlib:
 - macosx_deployment_target
 c_stdlib_version:
-- '10.9'
+- '10.13'
 channel_sources:
 - conda-forge
 channel_targets:
diff --git a/.ci_support/osx_arm64_python3.10.____cpython.yaml b/.ci_support/osx_arm64_python3.10.____cpython.yaml
index cd05fa6..b84f92c 100644
--- a/.ci_support/osx_arm64_python3.10.____cpython.yaml
+++ b/.ci_support/osx_arm64_python3.10.____cpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.ci_support/osx_arm64_python3.11.____cpython.yaml b/.ci_support/osx_arm64_python3.11.____cpython.yaml
index 0413434..f2e2812 100644
--- a/.ci_support/osx_arm64_python3.11.____cpython.yaml
+++ b/.ci_support/osx_arm64_python3.11.____cpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.ci_support/osx_arm64_python3.12.____cpython.yaml b/.ci_support/osx_arm64_python3.12.____cpython.yaml
index beea73b..ccce180 100644
--- a/.ci_support/osx_arm64_python3.12.____cpython.yaml
+++ b/.ci_support/osx_arm64_python3.12.____cpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.ci_support/osx_arm64_python3.8.____cpython.yaml b/.ci_support/osx_arm64_python3.8.____cpython.yaml
index e9db319..fbfdbb0 100644
--- a/.ci_support/osx_arm64_python3.8.____cpython.yaml
+++ b/.ci_support/osx_arm64_python3.8.____cpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.ci_support/osx_arm64_python3.9.____cpython.yaml b/.ci_support/osx_arm64_python3.9.____cpython.yaml
index 4764ced..d12f87c 100644
--- a/.ci_support/osx_arm64_python3.9.____cpython.yaml
+++ b/.ci_support/osx_arm64_python3.9.____cpython.yaml
@@ -1,5 +1,7 @@
 MACOSX_DEPLOYMENT_TARGET:
 - '11.0'
+MACOSX_SDK_VERSION:
+- '11.0'
 c_compiler:
 - clang
 c_compiler_version:
diff --git a/.gitattributes b/.gitattributes
index 7f32763..18f114a 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -20,8 +20,8 @@ bld.bat text eol=crlf
 .travis.yml linguist-generated=true
 .scripts/* linguist-generated=true
 .woodpecker.yml linguist-generated=true
-LICENSE.txt linguist-generated=true
-README.md linguist-generated=true
+/LICENSE.txt linguist-generated=true
+/README.md linguist-generated=true
 azure-pipelines.yml linguist-generated=true
 build-locally.py linguist-generated=true
 shippable.yml linguist-generated=true
diff --git a/recipe/meta.yaml b/recipe/meta.yaml
index 7ea7ea1..09d725c 100644
--- a/recipe/meta.yaml
+++ b/recipe/meta.yaml
@@ -1,5 +1,5 @@
 {% set name = "treelite" %}
-{% set version = "4.1.2" %}
+{% set version = "4.2.1" %}
 
 package:
   name: {{ name|lower }}
@@ -7,12 +7,12 @@ package:
 
 source:
   url: https://github.com/dmlc/treelite/archive/{{ version }}.tar.gz
-  sha256: d848fbc751ed55fb02de5ff66f68c32c0a29d01d7810ae2700c6afb2e8e721dc
+  sha256: 0ec73263a7a2903f2b7663eef8e0bcae7f58cd01ebd1a16b6e7bf162f6ff98d0
   patches:
     - 0001-Open-libtreelite.so-with-global-visibility.patch
 
 build:
-  number: 2
+  number: 0
   skip: true  # [python_impl == 'pypy' and win]
 
 requirements:
@@ -22,7 +22,7 @@ requirements:
     - cmake >=3.14
     - ninja
     - fmt
-    - rapidjson >=1.1.0,<1.1.0.post*
+    - rapidjson >=v1.1.0.post20240409
     - llvm-openmp  # [osx]
     - libgomp  # [linux]
     - {{ compiler('c') }}