KNIME Slave not compatible with KNIME Server

I have an EC2 instance with Knime Server hosted on top, I recently updated Knime from 3.3.1 to 3.5.2 using the GUI and installed a few python extensions. Now when I go the knime server using a browser, I am getting the following error,
Load Error: KNIME Slave 4.6.2 is not compatible with KNIME Server 4.4.0


This indicates that you only updated the KNIME Analytics Platform used as server executor, but not the KNIME Server itself (which seems to be 4.4.0). Please update to the newest release of KNIME Server (4.6.2), that will resolve this issue.