diff --git a/sky130/Makefile.in b/sky130/Makefile.in
index 6fa0e35..78c7080 100644
--- a/sky130/Makefile.in
+++ b/sky130/Makefile.in
@@ -74,7 +74,7 @@
 SHELL = bash
 MV = mv
 
-REVISION    = 20200927
+REVISION    = `git describe --long`
 TECH        = sky130
 
 # If EF_STYLE is set to 1, then efabless naming conventions are