diff --git a/debian/changelog b/debian/changelog
index 93095a27f00f88e2ed6ee5e37fdda1d339767f24..ca03be3d0e4912ca6e078fd3d9075db481b6c14b 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,10 +1,13 @@
-scikit-learn (0.17.0-3) UNRELEASED; urgency=medium
+scikit-learn (0.17.0-3) unstable; urgency=medium
 
   * debian/control
     - recommend python3- versions of packages for python3-sklearn. Thanks
       Christopher Baines
+  * debian/rules
+    - boost minimal Cython version for recythonization to 0.23.1.
+      Should enable back bakckports on older Debian/Ubuntus
 
- -- Yaroslav Halchenko <debian@onerussian.com>  Sun, 06 Dec 2015 20:18:45 -0500
+ -- Yaroslav Halchenko <debian@onerussian.com>  Mon, 21 Dec 2015 20:38:42 -0500
 
 scikit-learn (0.17.0-2) unstable; urgency=medium
 
diff --git a/debian/rules b/debian/rules
index 1240026050f0467abc7727a6f634dc222e8959a8..a3c33d09a027679dce2c3064fb467be33f00d2b4 100755
--- a/debian/rules
+++ b/debian/rules
@@ -16,7 +16,7 @@ NODOC = $(shell dpkg --compare-versions $(SPHINX_VER) lt 1.1.3 && echo "nodoc" |
 export DEB_BUILD_OPTIONS += $(NODOC)
 
 CYTHON_VER := $(shell dpkg -l cython 2>/dev/null | awk '/^ii/{print $$3;}' || echo 0)
-RECONF = $(shell dpkg --compare-versions $(CYTHON_VER) ge 0.20.1 && echo ",autoreconf" || echo "")
+RECONF = $(shell dpkg --compare-versions $(CYTHON_VER) ge 0.23.1 && echo ",autoreconf" || echo "")
 
 # Some tests are known to fail randomly so need to be excluded ATM
 NOSEARGS :=