diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index a8bd8608242ef99bd65fc6f0f16f457ef456cba2..e40d2f14cae35660649ceb030ecf3f88ce8a78d5 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -29,7 +29,7 @@ ENDIF(BUILD_EXAMPLES OR BUILD_TESTS)
 
 #find dependencies.
 
-FIND_PACKAGE(Eigen 3 REQUIRED)
+FIND_PACKAGE(Eigen 3.3 REQUIRED)
 
 FIND_PACKAGE(Threads REQUIRED)