diff --git a/.github/workflows/llvmdev_build.yml b/.github/workflows/llvmdev_build.yml
index 1cb5a9253..1d5b1a2b4 100644
--- a/.github/workflows/llvmdev_build.yml
+++ b/.github/workflows/llvmdev_build.yml
@@ -141,11 +141,7 @@ jobs:
         run: |
           set -x
           mkdir -p "${CONDA_CHANNEL_DIR}"
-          EXTRA_ARGS=()
-          if [[ "${{ matrix.platform }}" == "osx-64" ]]; then
-            EXTRA_ARGS=(--variants '{"CONDA_BUILD_SYSROOT": "/opt/MacOSX10.10.sdk"}')
-          fi
-          conda build "./conda-recipes/${{ matrix.recipe }}" "--output-folder=${CONDA_CHANNEL_DIR}" "${EXTRA_ARGS[@]}"
+          conda build "./conda-recipes/${{ matrix.recipe }}" "--output-folder=${CONDA_CHANNEL_DIR}"
           ls -lah "${CONDA_CHANNEL_DIR}"
 
       - name: Upload conda package
diff --git a/buildscripts/github/MacOSX10.10.sdk.checksum b/buildscripts/github/MacOSX10.10.sdk.checksum
deleted file mode 100644
index a4fdcba00..000000000
--- a/buildscripts/github/MacOSX10.10.sdk.checksum
+++ /dev/null
@@ -1 +0,0 @@
-3839b875df1f2bc98893b8502da456cc0b022c4666bc6b7eb5764a5f915a9b00  MacOSX10.10.sdk.tar.xz
diff --git a/buildscripts/github/MacOSX10.15.sdk.checksum b/buildscripts/github/MacOSX10.15.sdk.checksum
new file mode 100644
index 000000000..608e3269a
--- /dev/null
+++ b/buildscripts/github/MacOSX10.15.sdk.checksum
@@ -0,0 +1 @@
+2408d07df7f324d3beea818585a6d990ba99587c218a3969f924dfcc4de93b62  MacOSX10.15.sdk.tar.xz
diff --git a/buildscripts/github/setup_platform.sh b/buildscripts/github/setup_platform.sh
index ec49863ef..dbaacfcab 100644
--- a/buildscripts/github/setup_platform.sh
+++ b/buildscripts/github/setup_platform.sh
@@ -13,17 +13,17 @@ case "${PLATFORM}" in
         mkdir -p "${sdk_dir}"
 
         # Download SDK
-        echo "Downloading MacOSX10.10.sdk.tar.xz"
-        wget -q https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX10.10.sdk.tar.xz
+        echo "Downloading MacOSX10.15.sdk.tar.xz"
+        wget -q https://github.com/phracker/MacOSX-SDKs/releases/download/10.15/MacOSX10.15.sdk.tar.xz
 
         # Verify checksum
         echo "Verifying SDK checksum"
-        shasum -c "${sdk_dir}/MacOSX10.10.sdk.checksum" || exit 1
+        shasum -c "${sdk_dir}/MacOSX10.15.sdk.checksum" || exit 1
 
         # Extract SDK to /opt
         echo "Extracting SDK to /opt"
         sudo mkdir -p /opt
-        sudo tar -xf MacOSX10.10.sdk.tar.xz -C /opt
+        sudo tar -xf MacOSX10.15.sdk.tar.xz -C /opt
         echo "macOS SDK setup complete"
         ;;
     *)
diff --git a/conda-recipes/llvmdev/conda_build_config.yaml b/conda-recipes/llvmdev/conda_build_config.yaml
index 4680c58b7..888a6576e 100644
--- a/conda-recipes/llvmdev/conda_build_config.yaml
+++ b/conda-recipes/llvmdev/conda_build_config.yaml
@@ -16,4 +16,7 @@ cxx_compiler:            # [win]
   - vs2022               # [win]
 
 MACOSX_SDK_VERSION:    # [osx and x86_64]
-  - 10.12              # [osx and x86_64]
+  - 10.15              # [osx and x86_64]
+
+CONDA_BUILD_SYSROOT:
+  - /opt/MacOSX10.15.sdk        # [osx and x86_64]
diff --git a/conda-recipes/llvmdev_for_wheel/conda_build_config.yaml b/conda-recipes/llvmdev_for_wheel/conda_build_config.yaml
index 6709f378f..c99670624 100644
--- a/conda-recipes/llvmdev_for_wheel/conda_build_config.yaml
+++ b/conda-recipes/llvmdev_for_wheel/conda_build_config.yaml
@@ -23,4 +23,7 @@ cxx_compiler_version:       # [osx]
   - 14                      # [osx]
 
 MACOSX_SDK_VERSION:    # [osx and x86_64]
-  - 10.12              # [osx and x86_64]
+  - 10.15              # [osx and x86_64]
+
+CONDA_BUILD_SYSROOT:
+  - /opt/MacOSX10.15.sdk        # [osx and x86_64]
diff --git a/conda-recipes/llvmlite/build.sh b/conda-recipes/llvmlite/build.sh
index 66aa2f43f..251462a71 100755
--- a/conda-recipes/llvmlite/build.sh
+++ b/conda-recipes/llvmlite/build.sh
@@ -7,7 +7,8 @@ if [ -n "$MACOSX_DEPLOYMENT_TARGET" ]; then
     if [[ $build_platform == osx-arm64 ]]; then
         export MACOSX_DEPLOYMENT_TARGET=11.1
     else
-        export MACOSX_DEPLOYMENT_TARGET=10.12
+        # OSX needs 10.15 or above for consistency with wheel builds
+        export MACOSX_DEPLOYMENT_TARGET=10.15
     fi
 fi
 
diff --git a/conda-recipes/llvmlite/conda_build_config.yaml b/conda-recipes/llvmlite/conda_build_config.yaml
index 27b70ec92..888a6576e 100644
--- a/conda-recipes/llvmlite/conda_build_config.yaml
+++ b/conda-recipes/llvmlite/conda_build_config.yaml
@@ -15,5 +15,8 @@ c_compiler:              # [win]
 cxx_compiler:            # [win]
   - vs2022               # [win]
 
+MACOSX_SDK_VERSION:    # [osx and x86_64]
+  - 10.15              # [osx and x86_64]
+
 CONDA_BUILD_SYSROOT:
-  - /opt/MacOSX10.10.sdk  # [osx and x86_64]
+  - /opt/MacOSX10.15.sdk        # [osx and x86_64]