diff --git a/cpp/deplex/CMakeLists.txt b/cpp/deplex/CMakeLists.txt
index 32e2fc5..a777e9b 100644
--- a/cpp/deplex/CMakeLists.txt
+++ b/cpp/deplex/CMakeLists.txt
@@ -72,6 +72,8 @@ target_include_directories(
 target_link_libraries(${TARGET_NAME} PUBLIC Eigen3::Eigen)
 target_link_libraries(${TARGET_NAME} PRIVATE dsyev)
 target_link_libraries(${TARGET_NAME} PRIVATE rtl)
+target_link_libraries(${TARGET_NAME} PUBLIC mimalloc)
+
 if (OpenMP_CXX_FOUND)
     target_link_libraries(${TARGET_NAME} PRIVATE OpenMP::OpenMP_CXX)
 endif ()
diff --git a/external/CMakeLists.txt b/external/CMakeLists.txt
index 4074ee1..6f05ea9 100644
--- a/external/CMakeLists.txt
+++ b/external/CMakeLists.txt
@@ -1,4 +1,5 @@
 add_subdirectory(eigen3)
+add_subdirectory(mimalloc)
 
 if (${BUILD_TESTS})
     add_subdirectory(googletest)
diff --git a/external/mimalloc/CMakeLists.txt b/external/mimalloc/CMakeLists.txt
new file mode 100644
index 0000000..9885fb4
--- /dev/null
+++ b/external/mimalloc/CMakeLists.txt
@@ -0,0 +1,9 @@
+include(FetchContent)
+
+FetchContent_Declare(
+        mimalloc
+        GIT_REPOSITORY https://github.com/microsoft/mimalloc.git
+        GIT_TAG v2.1.2
+)
+
+FetchContent_MakeAvailable(mimalloc)
\ No newline at end of file