diff --git a/CMakeLists.txt b/CMakeLists.txt
index d601487..610f968 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -163,7 +163,7 @@ endif()
 
 # Eigen3
 if(PAGMO_WITH_EIGEN3)
-    find_package(Eigen3 3.3 REQUIRED NO_MODULE)
+    find_package(Eigen3 REQUIRED NO_MODULE)
 endif()
 
 # NLopt
@@ -454,7 +454,7 @@ install(TARGETS pagmo
 # Setup of the optional deps.
 set(_PAGMO_CONFIG_OPTIONAL_DEPS)
 if(PAGMO_WITH_EIGEN3)
-    set(_PAGMO_CONFIG_OPTIONAL_DEPS "${_PAGMO_CONFIG_OPTIONAL_DEPS}find_package(Eigen3 3.3 REQUIRED NO_MODULE)\n")
+    set(_PAGMO_CONFIG_OPTIONAL_DEPS "${_PAGMO_CONFIG_OPTIONAL_DEPS}find_package(Eigen3 REQUIRED NO_MODULE)\n")
 endif()
 if(PAGMO_WITH_NLOPT)
     set(_PAGMO_CONFIG_OPTIONAL_DEPS "${_PAGMO_CONFIG_OPTIONAL_DEPS}find_package(NLopt 2.6 REQUIRED NO_MODULE)\n")