diff --git a/packages/Makefile b/packages/Makefile
index e0b7a9909..64fc6daaf 100644
--- a/packages/Makefile
+++ b/packages/Makefile
@@ -1,7 +1,7 @@
 DISTRIBUTION ?= jessie
 
 GIT_COMMIT=$(shell git log -n1 --format=format:%h)
-GIT_DATE=$(shell date +%Y%m%d --date="@$(shell git log -n1 --format=format:%ct)")
+GIT_DATE=$(shell date +%Y%m%d%H%M%S --date="@$(shell git log -n1 --format=format:%ct)")
 
 ifeq ($(GIT_COMMIT),)
 	echo "Error: Failed to extract commit from git log"