diff --git a/package.xml b/package.xml
index 7eaa09ad..2344e2c6 100644
--- a/package.xml
+++ b/package.xml
@@ -15,15 +15,9 @@
   <build_depend>git</build_depend>
   <build_depend>doxygen</build_depend>
 
-  <!-- The following tag is recommended by REP-136 -->
-  <exec_depend condition="$ROS_VERSION == 1">catkin</exec_depend>
-
-  <depend condition="$ROS_PYTHON_VERSION == 2">python</depend>
-  <depend condition="$ROS_PYTHON_VERSION == 3">python3</depend>
-  <depend condition="$ROS_PYTHON_VERSION == 2">python-numpy</depend>
-  <depend condition="$ROS_PYTHON_VERSION == 2">python-scipy</depend>
-  <depend condition="$ROS_PYTHON_VERSION == 3">python3-numpy</depend>
-  <depend condition="$ROS_PYTHON_VERSION == 3">python3-scipy</depend>
+  <depend>python3</depend>
+  <depend>python3-numpy</depend>
+  <depend>python3-scipy</depend>
   <depend>eigen</depend>
   <depend>boost</depend>