diff --git a/.circleci/config.yml b/.circleci/config.yml
index 559b0f4c6..a98e5f655 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -123,6 +123,9 @@ jobs:
       xcode_version:
         type: string
         default: "15.2.0"
+      deployment_target:
+        type: string
+        default: ""
     macos:
       xcode: << parameters.xcode_version >>
     resource_class: macos.m1.medium.gen1
@@ -209,6 +212,9 @@ jobs:
       xcode_version:
         type: string
         default: "15.2.0"
+      deployment_target:
+        type: string
+        default: ""
       build_env:
         type: string
         default: ""
@@ -237,6 +243,7 @@ jobs:
             source env/bin/activate
             DEV_RELEASE=1 \
               CMAKE_BUILD_PARALLEL_LEVEL=`sysctl -n hw.ncpu` \
+              CMAKE_ARGS=-DCMAKE_OSX_DEPLOYMENT_TARGET=<< parameters.deployment_target >> \
               pip install . -v
       - run:
           name: Generate package stubs
@@ -250,6 +257,7 @@ jobs:
             source env/bin/activate
             << parameters.build_env >> \
               CMAKE_BUILD_PARALLEL_LEVEL=`sysctl -n hw.ncpu` \
+              CMAKE_ARGS=-DCMAKE_OSX_DEPLOYMENT_TARGET=<< parameters.deployment_target >> \
               python -m build -w
       - when:
           condition: << parameters.build_env >>
@@ -332,7 +340,13 @@ workflows:
             parameters:
               xcode_version: ["15.0.0", "15.2.0", "16.0.0"]
       - linux_build_and_test
-      - build_documentation 
+      - build_documentation
+      - build_release:
+          matrix:
+            parameters:
+              python_version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+              xcode_version: ["15.2.0"]
+              deployment_target: ["", "14.0"]
 
   build_pypi_release:
     when:
@@ -387,7 +401,8 @@ workflows:
           matrix:
             parameters:
               python_version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
-              xcode_version: ["15.0.0", "15.2.0"]
+              xcode_version: ["15.2.0"]
+              deployment_target: ["", "14.0"]
   weekly_build:
     when:
       and:
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 58ccd0a60..5963c8442 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ project(mlx LANGUAGES C CXX)
 
 # ----------------------------- Setup -----------------------------
 set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
-set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_INSTALL_MESSAGE NEVER)
@@ -223,13 +223,9 @@ target_include_directories(
   mlx PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
              $<INSTALL_INTERFACE:include>)
 
-FetchContent_Declare(
-  fmt
-  GIT_REPOSITORY https://github.com/fmtlib/fmt.git
-  GIT_TAG 10.2.1
-  EXCLUDE_FROM_ALL)
-FetchContent_MakeAvailable(fmt)
-target_link_libraries(mlx PRIVATE $<BUILD_INTERFACE:fmt::fmt-header-only>)
+# FetchContent_Declare( fmt GIT_REPOSITORY https://github.com/fmtlib/fmt.git
+# GIT_TAG 10.2.1 EXCLUDE_FROM_ALL) FetchContent_MakeAvailable(fmt)
+# target_link_libraries(mlx PRIVATE $<BUILD_INTERFACE:fmt::fmt-header-only>)
 
 if(MLX_BUILD_PYTHON_BINDINGS)
   message(STATUS "Building Python bindings.")