diff --git a/.env b/.env
new file mode 100644
index 0000000..bf525bc
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+VIVADO_SETTINGS=/opt/Xilinx/2025.1/Vivado/settings64.sh
diff --git a/Makefile b/Makefile
index e13a7bf..6ef03d4 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,5 @@
-VIVADO_SETTINGS := C:/Xilinx/Vivado/2023.2/settings64.sh
+include .env
+export $(shell sed 's/=.*//' .env)
 
 PROJ_NAME		:= example
 SIM_TOP			:= example_tb