```cmake
# ITK version number components.
set(ITK_VERSION_MAJOR "5")
set(ITK_VERSION_MINOR "1")
set(ITK_VERSION_PATCH "0")
```

Update ITK CMake version for 5.1.1
user
```cmake
# ITK version number components.
set(ITK_VERSION_MAJOR "5")
set(ITK_VERSION_MINOR "1")
set(ITK_VERSION_PATCH "1")
```
assistant