diff --git a/CMakeLists.txt b/CMakeLists.txt
index b35afff8f2..048b4f925c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -295,6 +295,7 @@ set(GTHREAD2_REQUIRED)
 set(PCAP_REQUIRED)
 set(M_REQUIRED)
 set(PythonInterp_FIND_VERSION 2)
+set(Python_ADDITIONAL_VERSIONS 3)
 
 set(PACKAGELIST ${PACKAGELIST} HtmlViewer)