diff --git a/Mk/Uses/python.mk b/Mk/Uses/python.mk
--- a/Mk/Uses/python.mk
+++ b/Mk/Uses/python.mk
@@ -441,6 +441,7 @@
 
 .  if ${_PYTHON_ARGS} == 2.7
 DEV_WARNING+=		"lang/python27 reached End of Life and will be removed somewhere in the future, please convert to a modern version of python"
+NOT_REPRODUCIBLE=
 .  elif ${_PYTHON_ARGS} == 2
 DEV_ERROR+=		"USES=python:2 is no longer supported, use USES=python:2.7"
 .  elif ${_PYTHON_ARGS} == 3
diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -2021,6 +2021,18 @@
 CHECKSUM_ALGORITHMS?= sha256
 
 DISTINFO_FILE?=		${MASTERDIR}/distinfo
+_TIMESTAMP=			0
+.if !defined(NOT_REPRODUCIBLE) && exists(${DISTINFO_FILE})
+.if !defined(_TIMESTAMP_CACHE) || empty(_TIMESTAMP_CACHE)
+_TIMESTAMP_CACHE!=	${GREP} -m1 '^TIMESTAMP' ${DISTINFO_FILE} | ${CUT} -wf3
+.endif
+_TIMESTAMP=		${_TIMESTAMP_CACHE}
+.endif
+.if ${_TIMESTAMP} != 0
+WRK_ENV+=		SOURCE_DATE_EPOCH='${_TIMESTAMP}'
+.endif
+
+
 
 MAKE_FLAGS?=	-f
 MAKEFILE?=		Makefile
@@ -3478,6 +3490,9 @@
 PKG_CREATE_ARGS+= -l ${PKG_COMPRESSION_LEVEL}
 .      endif
 PKG_CREATE_ARGS+=	-r ${STAGEDIR}
+.if ${_TIMESTAMP} != 0
+PKG_CREATE_ARGS+=	-t ${_TIMESTAMP}
+.endif
 .      if defined(PKG_CREATE_VERBOSE)
 PKG_CREATE_ARGS+=	-v
 .      endif