diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6e24f10..7224fa9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,7 +3,9 @@ cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
 # 3.13: target_link_options
 
 set(IRODS_MINIMUM_VERSION "4.90.0")
-find_package(IRODS "${IRODS_MINIMUM_VERSION}" REQUIRED)
+set(IRODS_MAXIMUM_VERSION "6.0.0")
+find_package(IRODS "${IRODS_MINIMUM_VERSION}...<${IRODS_MAXIMUM_VERSION}" REQUIRED)
+
 set(IRODS_PLUGIN_REVISION "0")
 set(IRODS_PLUGIN_VERSION "5.0.0.${IRODS_PLUGIN_REVISION}")