diff --git a/debian/changelog b/debian/changelog
index 6af62d619..d50875a98 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -3,8 +3,11 @@ linux (4.1~rc3-1~exp1) UNRELEASED; urgency=medium
   * New upstream release candidate
 
   [ Ben Hutchings ]
-  * linux-image: Fix timestamps in the built-in initramfs for reproducible
-    build
+  * Fix some embedded timestamps that prevent a reproducible build
+    (thanks to Jérémy Bobbio):
+    - linux-image: Fix timestamps in the built-in initramfs
+    - linux-source: Fix timestamps in the tarball
+    - linux-doc: Drop original timestamp (and name) when compressing
 
  -- Ben Hutchings <ben@decadent.org.uk>  Mon, 11 May 2015 16:19:42 +0100
 
diff --git a/debian/rules.real b/debian/rules.real
index 545e4d947..4793fb36f 100644
--- a/debian/rules.real
+++ b/debian/rules.real
@@ -87,6 +87,8 @@ $(BUILD_DIR)/linux-source-$(UPSTREAMVERSION).tar.xz: $(STAMPS_DIR)/source
 	rm -rf '$@' '$(DIR)'
 	$(call copy_source,$(DIR))
 	chmod -R u+rw,go=rX '$(DIR)'
+	find '$(DIR)' -depth -newermt '$(SOURCE_DATE)' -print0 | \
+		xargs -0r touch --no-dereference --date='$(SOURCE_DATE)'
 	cd '$(BUILD_DIR)'; tar -caf 'linux-source-$(UPSTREAMVERSION).tar.xz' 'linux-source-$(UPSTREAMVERSION)'
 	rm -rf '$(DIR)'
 
@@ -202,7 +204,7 @@ install-doc: $(STAMPS_DIR)/build-doc
 	cd $(DIR)/Documentation/DocBook; \
 	find * -name '*.html' -print | \
 	cpio -pd --preserve-modification-time '$(CURDIR)/$(OUT_DIR)/html'
-	gzip -9qfr $(OUT_DIR)/Documentation
+	gzip -9nqfr $(OUT_DIR)/Documentation
 	+$(MAKE_SELF) install-base
 
 install-manual: PACKAGE_NAME = linux-manual-$(VERSION)