diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8065daa..89be99a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ set(extra_c_flags "-g -O2 -Wno-incompatible-pointer-types -Wno-deprecated-declar
 
 include(ExternalProject)
 ExternalProject_Add(EP_${PROJECT_NAME}
-    URL https://www.phidgets.com/downloads/phidget22/libraries/linux/libphidget22/libphidget22-1.19.20240304.tar.gz
+    URL ${CMAKE_CURRENT_SOURCE_DIR}/libphidget22-1.19.20240304.tar.gz
     URL_MD5 9b059eaef8cb8ce70b8abd7e4d309d1d
 
     SOURCE_DIR ${PROJECT_BINARY_DIR}/${PROJECT_NAME}-src