diff --git a/ndn-cxx/debian/changelog b/ndn-cxx/debian/changelog
index 5064d01..0bdff29 100644
--- a/ndn-cxx/debian/changelog
+++ b/ndn-cxx/debian/changelog
@@ -1,3 +1,17 @@
+ndn-cxx (0.5.1-60-gb555b00c-ppa3~DISTRO) DISTRO; urgency=low
+
+  * New version based on b555b00c280b9c9ed46f24a1fbebc73b720601af
+    (https://github.com/named-data/ndn-cxx.git)
+
+ -- Alexander Afanasyev <alexander.afanasyev@ucla.edu>  Mon, 12 Jun 2017 20:40:37 +0000
+
+ndn-cxx (0.5.1-60-gb555b00c-ppa2~DISTRO) DISTRO; urgency=low
+
+  * New version based on b555b00c280b9c9ed46f24a1fbebc73b720601af
+    (https://github.com/named-data/ndn-cxx.git)
+
+ -- Alexander Afanasyev <alexander.afanasyev@ucla.edu>  Mon, 12 Jun 2017 20:32:33 +0000
+
 ndn-cxx (0.5.1-60-gb555b00c-ppa1~DISTRO) DISTRO; urgency=low
 
   * New version based on b555b00c280b9c9ed46f24a1fbebc73b720601af
diff --git a/ndn-cxx/debian/rules b/ndn-cxx/debian/rules
index b5e24b6..060cb26 100755
--- a/ndn-cxx/debian/rules
+++ b/ndn-cxx/debian/rules
@@ -18,10 +18,10 @@
 	dh $@ --parallel
 
 override_dh_auto_configure:
-	./waf configure --prefix=/usr --sysconfdir=/etc --libdir="$(LIBDIR)" --localstatedir=/var --disable-static --enable-shared --boost-libs="$(LIBDIR)"
+	./waf configure --without-pch --prefix=/usr --sysconfdir=/etc --libdir="$(LIBDIR)" --localstatedir=/var --disable-static --enable-shared --boost-libs="$(LIBDIR)"
 
 override_dh_auto_build:
-	./waf build
+	./waf build -j1
 
 override_dh_auto_install:
 	./waf install --destdir=debian/tmp