diff --git a/CMakeLists.txt b/CMakeLists.txt
index ba90bcb80..c11897438 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -363,6 +363,10 @@ set(GNSSSDR_MATHJAX_EXTERNAL_VERSION "2.7.7")
 set(GNSSSDR_ABSL_LOCAL_VERSION "origin/master") # live at head (see https://abseil.io/about/releases)
 
 # Downgrade versions if requirements are not met
+if(CMAKE_VERSION VERSION_LESS "3.5")
+    set(GNSSSDR_ARMADILLO_LOCAL_VERSION "12.8.x")
+endif()
+
 if(CMAKE_VERSION VERSION_LESS "3.22")
     set(GNSSSDR_GLOG_LOCAL_VERSION "0.6.0")
 endif()