Validation warning about SPIR-V Capability

Question

I'm using Vulkan for heavy GPU computations and in some kernels I'm applying subgroup arithmetic operations. In order to use this, I've included necessary extensions in the kernel:

#extension GL_KHR_shader_subgroup_arithmetic: enable
#extension GL_KHR_shader_subgroup_basic: enable

Everything is working in the way I expect it, but there's a validation error that bothers me. It has this text:

Object 0: handle = 0x78de221930, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0xa7bb8db6 | vkCreateShaderModule(): The SPIR-V Capability (GroupNonUniformArithmetic) was declared, but none of the requirements were met to use it. The Vulkan spec states: If pCode declares any of the capabilities listed in the SPIR-V Environment appendix, one of the corresponding requirements must be satisfied (https://www.khronos.org/registry/vulkan/specs/1.3-extensions/html/vkspec.html#VUID-VkShaderModuleCreateInfo-pCode-01091)

I don't really understand, what EXACTLY the requirements I need to satisfy. Going to the url didn't really help, I don't think it specifies what I exactly need to do.

Could you please advise how to tackle this issue? Thanks in advance!