diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index a21cc1bb5cc..aaaf2e2268b 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -221,6 +221,7 @@ endif ()
 
 set(DEP_Boost_COMPONENTS system iostreams filesystem thread log locale regex date_time)
 include(Boost/Boost.cmake)
+include(Eigen/Eigen.cmake)
 
 # The order of includes respects the dependencies between libraries
 include(Cereal/Cereal.cmake)
@@ -258,6 +259,7 @@ include(FREETYPE/FREETYPE.cmake)
 
 set(_dep_list
     dep_Boost
+    dep_Eigen
     dep_TBB
     ${CURL_PKG}
     dep_wxWidgets
diff --git a/deps/Eigen/Eigen.cmake b/deps/Eigen/Eigen.cmake
new file mode 100644
index 00000000000..4d334041983
--- /dev/null
+++ b/deps/Eigen/Eigen.cmake
@@ -0,0 +1,8 @@
+orcaslicer_add_cmake_project(
+    Eigen
+    URL https://gitlab.com/libeigen/eigen/-/archive/3.4.0/eigen-3.4.0.tar.gz
+    URL_HASH SHA256=8586084f71f9bde545ee7fa6d00288b264a2b7ac3607b974e54d13e7162c1c72
+    CMAKE_ARGS
+        -DCMAKE_POSITION_INDEPENDENT_CODE=ON
+        -DBUILD_TESTING=OFF
+)
diff --git a/src/libslic3r/CMakeLists.txt b/src/libslic3r/CMakeLists.txt
index 926619dbf33..d1fb67d3edd 100644
--- a/src/libslic3r/CMakeLists.txt
+++ b/src/libslic3r/CMakeLists.txt
@@ -476,6 +476,8 @@ set(CGAL_DO_NOT_WARN_ABOUT_CMAKE_BUILD_TYPE ON CACHE BOOL "" FORCE)
 cmake_policy(PUSH)
 cmake_policy(SET CMP0011 NEW)
 find_package(CGAL REQUIRED)
+# OpenCV depends on Eigen3, but does not use find_package to find it.
+find_package(Eigen3 CONFIG)
 find_package(OpenCV REQUIRED core)
 cmake_policy(POP)