diff --git a/ext/MatrixAlgebraKitAMDGPUExt/MatrixAlgebraKitAMDGPUExt.jl b/ext/MatrixAlgebraKitAMDGPUExt/MatrixAlgebraKitAMDGPUExt.jl
index 258b46d6..ff150f24 100644
--- a/ext/MatrixAlgebraKitAMDGPUExt/MatrixAlgebraKitAMDGPUExt.jl
+++ b/ext/MatrixAlgebraKitAMDGPUExt/MatrixAlgebraKitAMDGPUExt.jl
@@ -112,15 +112,17 @@ function _project_hermitian_diag_kernel(A, B, ::Val{false})
 end
 # COV_EXCL_STOP
 
+const SupportedROCMatrix{T} = Union{AnyROCMatrix{T}, SubArray{T, 2, <:AnyROCMatrix{T}}}
+
 function MatrixAlgebraKit._project_hermitian_offdiag!(
-        Au::StridedROCMatrix, Al::StridedROCMatrix, Bu::StridedROCMatrix, Bl::StridedROCMatrix, ::Val{anti}
+        Au::SupportedROCMatrix, Al::SupportedROCMatrix, Bu::SupportedROCMatrix, Bl::SupportedROCMatrix, ::Val{anti}
     ) where {anti}
     thread_dim = 512
     block_dim = cld(size(Au, 2), thread_dim)
     @roc groupsize = thread_dim gridsize = block_dim _project_hermitian_offdiag_kernel(Au, Al, Bu, Bl, Val(anti))
     return nothing
 end
-function MatrixAlgebraKit._project_hermitian_diag!(A::StridedROCMatrix, B::StridedROCMatrix, ::Val{anti}) where {anti}
+function MatrixAlgebraKit._project_hermitian_diag!(A::SupportedROCMatrix, B::SupportedROCMatrix, ::Val{anti}) where {anti}
     thread_dim = 512
     block_dim = cld(size(A, 1), thread_dim)
     @roc groupsize = thread_dim gridsize = block_dim _project_hermitian_diag_kernel(A, B, Val(anti))
diff --git a/ext/MatrixAlgebraKitCUDAExt/MatrixAlgebraKitCUDAExt.jl b/ext/MatrixAlgebraKitCUDAExt/MatrixAlgebraKitCUDAExt.jl
index 189f5825..4d34dd9e 100644
--- a/ext/MatrixAlgebraKitCUDAExt/MatrixAlgebraKitCUDAExt.jl
+++ b/ext/MatrixAlgebraKitCUDAExt/MatrixAlgebraKitCUDAExt.jl
@@ -136,15 +136,17 @@ function _project_hermitian_diag_kernel(A, B, ::Val{false})
 end
 # COV_EXCL_STOP
 
+const SupportedCuMatrix{T} = Union{AnyCuMatrix{T}, SubArray{T, 2, <:AnyCuMatrix{T}}}
+
 function MatrixAlgebraKit._project_hermitian_offdiag!(
-        Au::StridedCuMatrix, Al::StridedCuMatrix, Bu::StridedCuMatrix, Bl::StridedCuMatrix, ::Val{anti}
+        Au::SupportedCuMatrix, Al::SupportedCuMatrix, Bu::SupportedCuMatrix, Bl::SupportedCuMatrix, ::Val{anti}
     ) where {anti}
     thread_dim = 512
     block_dim = cld(size(Au, 2), thread_dim)
     @cuda threads = thread_dim blocks = block_dim _project_hermitian_offdiag_kernel(Au, Al, Bu, Bl, Val(anti))
     return nothing
 end
-function MatrixAlgebraKit._project_hermitian_diag!(A::StridedCuMatrix, B::StridedCuMatrix, ::Val{anti}) where {anti}
+function MatrixAlgebraKit._project_hermitian_diag!(A::SupportedCuMatrix, B::SupportedCuMatrix, ::Val{anti}) where {anti}
     thread_dim = 512
     block_dim = cld(size(A, 1), thread_dim)
     @cuda threads = thread_dim blocks = block_dim _project_hermitian_diag_kernel(A, B, Val(anti))