When you drag and drop the Eyeshot control from the toolbox onto a Form (or a Window for WPF platform), Visual Studio automatically creates the required references in the project file, which looks like this:
<Reference Include="devDept.Eyeshot.Control.Win.v11, Version=11.0.710.0, Culture=neutral, PublicKeyToken=5385d83d2fb4d7d9, processorArchitecture=MSIL" />
<Reference Include="devDept.Geometry.v11, Version=11.0.710.0, Culture=neutral, PublicKeyToken=9440825e8b4733bc" />
<Reference Include="devDept.Graphics.Shaders.v11, Version=11.0.710.0, Culture=neutral, PublicKeyToken=54ce5f5f803e4b42" />
<Reference Include="devDept.Graphics.Win.v11, Version=11.0.710.0, Culture=neutral, PublicKeyToken=f3cd437f0d8061b5" />
These references only work for the specific version of Eyeshot currently installed, i.e. 11.0.710. When you will update to a new version you need to change all references again.
This is the standard behavior of Visual Studio, it is not possible to change it on our side.
However, you can simply select required references in the Solution Explorer and then set the SpecificVersion property to False.