diff --git a/deps/CMakeLists.txt b/deps/CMakeLists.txt
index 40365c6c..b79f5323 100644
--- a/deps/CMakeLists.txt
+++ b/deps/CMakeLists.txt
@@ -72,7 +72,7 @@ else()
       FetchContent_Declare(
           eigen
           GIT_REPOSITORY  https://gitlab.com/libeigen/eigen.git
-          GIT_TAG         3.3.8
+          GIT_TAG         3.3.9
           SOURCE_DIR      "${CMAKE_CURRENT_BINARY_DIR}/eigen-src"
           BINARY_DIR      "${CMAKE_CURRENT_BINARY_DIR}/eigen-build"
       )