diff -Nru debian-science-1.7ubuntu2/debian/changelog debian-science-1.7ubuntu3/debian/changelog
--- debian-science-1.7ubuntu2/debian/changelog	2018-01-26 15:25:09.000000000 +0000
+++ debian-science-1.7ubuntu3/debian/changelog	2018-02-24 19:50:13.000000000 +0000
@@ -1,3 +1,11 @@
+debian-science (1.7ubuntu3) bionic; urgency=medium
+
+  * debian/control, tasks/*:
+    - Drop python-cdo dependency, it's no longer build for python2.
+    - Update gazebo7 to gazebo9 and libsdformat4 to libsdformat6.
+
+ -- Adam Conrad <adconrad@ubuntu.com>  Sat, 24 Feb 2018 12:50:13 -0700
+
 debian-science (1.7ubuntu2) bionic; urgency=medium
 
   * debian/control, tasks/mathematics-dev:
diff -Nru debian-science-1.7ubuntu2/debian/control debian-science-1.7ubuntu3/debian/control
--- debian-science-1.7ubuntu2/debian/control	2018-01-26 15:25:09.000000000 +0000
+++ debian-science-1.7ubuntu3/debian/control	2018-02-24 19:50:08.000000000 +0000
@@ -1608,7 +1608,6 @@
  metview,
  nco,
  ncview,
- python-cdo,
  python-drslib,
  python-ferret,
  python-grib,
@@ -2213,7 +2212,7 @@
 Section: metapackages
 Architecture: all
 Depends: science-tasks (= ${source:Version}), ${misc:Depends}, science-config (= ${source:Version})
-Recommends: gazebo7,
+Recommends: gazebo9,
  liburdfdom-tools,
  morse-simulator,
  octomap-tools,
@@ -2260,7 +2259,7 @@
  libcomedi-dev,
  libconsole-bridge-dev,
  libcv-dev,
- libgazebo7-dev,
+ libgazebo9-dev,
  libignition-math2-dev,
  libignition-msgs-dev,
  libignition-transport-dev,
@@ -2270,7 +2269,7 @@
  libompl-dev,
  libopenigtlink-dev,
  libpcl-dev,
- libsdformat4-dev,
+ libsdformat6-dev,
  libsimbody-dev,
  libslicot-dev,
  liburdfdom-dev,
@@ -2298,7 +2297,7 @@
 Recommends: calculix-ccx,
  calculix-cgx,
  esys-particle,
- gazebo7,
+ gazebo9,
  getdp,
  lammps,
  libceres-dev,
diff -Nru debian-science-1.7ubuntu2/tasks/meteorology debian-science-1.7ubuntu3/tasks/meteorology
--- debian-science-1.7ubuntu2/tasks/meteorology	2017-10-28 22:56:50.000000000 +0000
+++ debian-science-1.7ubuntu3/tasks/meteorology	2018-02-24 19:50:13.000000000 +0000
@@ -66,8 +66,6 @@
 Depends: ncl
 Homepage:  http://www.ncl.ucar.edu/overview.shtml
 
-Depends: python-cdo
-
 Depends: python3-cdo
 
 Depends: python-netcdf
diff -Nru debian-science-1.7ubuntu2/tasks/robotics debian-science-1.7ubuntu3/tasks/robotics
--- debian-science-1.7ubuntu2/tasks/robotics	2017-10-28 22:56:50.000000000 +0000
+++ debian-science-1.7ubuntu3/tasks/robotics	2018-02-24 19:50:13.000000000 +0000
@@ -178,7 +178,7 @@
  large consortium of researchers and engineers around the world. It is
  written in C++ and released under the BSD license.
 
-Depends: gazebo7
+Depends: gazebo9
 
 Depends: openrave
 Homepage: http://openrave.org/
diff -Nru debian-science-1.7ubuntu2/tasks/robotics-dev debian-science-1.7ubuntu3/tasks/robotics-dev
--- debian-science-1.7ubuntu2/tasks/robotics-dev	2017-10-28 22:56:50.000000000 +0000
+++ debian-science-1.7ubuntu3/tasks/robotics-dev	2018-02-24 19:50:13.000000000 +0000
@@ -29,7 +29,7 @@
 
 Depends: libslicot-dev
 
-Depends: libsdformat4-dev
+Depends: libsdformat6-dev
 
 Depends: libconsole-bridge-dev
 
@@ -37,7 +37,7 @@
 
 Depends: libccd-dev
 
-Depends: libgazebo7-dev
+Depends: libgazebo9-dev
 
 Depends: libsimbody-dev
 
diff -Nru debian-science-1.7ubuntu2/tasks/simulations debian-science-1.7ubuntu3/tasks/simulations
--- debian-science-1.7ubuntu2/tasks/simulations	2017-10-28 22:56:50.000000000 +0000
+++ debian-science-1.7ubuntu3/tasks/simulations	2018-02-24 19:50:13.000000000 +0000
@@ -39,7 +39,7 @@
 
 Depends: libceres-dev
 
-Depends: gazebo7
+Depends: gazebo9
 
 Suggests:  ceres-solver-doc