diff --git a/Project.toml b/Project.toml
index db5a705..9eaaec6 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "Gaius"
 uuid = "bffe22d1-cb55-4f4e-ac2c-f4dd4bf58912"
 authors = ["MasonProtter <mason.protter@icloud.com>"]
-version = "0.6.2"
+version = "0.6.3"
 
 [deps]
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -13,10 +13,10 @@ VectorizationBase = "3d5dd08c-fd9d-11e8-17fa-ed2836048c2f"
 
 [compat]
 BenchmarkTools = "0.5"
-LoopVectorization = "0.9.18"
+LoopVectorization = "0.10"
 StructArrays = "0.4.4"
 UnsafeArrays = "1.0.1"
-VectorizationBase = "0.15.2"
+VectorizationBase = "0.16"
 julia = "1.5"
 
 [extras]
diff --git a/src/Gaius.jl b/src/Gaius.jl
index 71de1e2..75d9af3 100644
--- a/src/Gaius.jl
+++ b/src/Gaius.jl
@@ -12,7 +12,7 @@ using LinearAlgebra: Adjoint, Transpose
 using LoopVectorization: @avx
 using StructArrays: StructArray
 using UnsafeArrays: @uviews, UnsafeArray
-using VectorizationBase: AVX512F, AbstractStridedPointer, gesp, vload, vstore!
+using VectorizationBase: AbstractStridedPointer, gesp, vload, vstore!
 
 export t_blocked_mul
 export t_blocked_mul!
diff --git a/src/choose_block_size.jl b/src/choose_block_size.jl
index daecc6c..ac1b085 100644
--- a/src/choose_block_size.jl
+++ b/src/choose_block_size.jl
@@ -1,6 +1,6 @@
 function choose_block_size(C, A, B, ::Nothing)
-    if (*)(length(C) |> Int128, length(A) |> Int128, length(B) |> Int128) >= ((3DEFAULT_BLOCK_SIZE) >>> 1)^6
-        DEFAULT_BLOCK_SIZE
+    if (*)(length(C) |> Int128, length(A) |> Int128, length(B) |> Int128) >= ((3default_block_size()) >>> 1)^6
+        default_block_size()
     else
         32
     end
diff --git a/src/global_constants.jl b/src/global_constants.jl
index 02e3def..b3ac299 100644
--- a/src/global_constants.jl
+++ b/src/global_constants.jl
@@ -1 +1 @@
-const DEFAULT_BLOCK_SIZE = AVX512F ? 96 : 64
+@generated default_block_size() = VectorizationBase.has_feature("x86_64_avx512f") ? 96 : 64
diff --git a/src/init.jl b/src/init.jl
index 112a6f1..65e3cb6 100644
--- a/src/init.jl
+++ b/src/init.jl
@@ -4,7 +4,7 @@ function __init__()
 end
 
 function _print_num_threads_warning()
-    sys_nc = VectorizationBase.NUM_CORES
+    sys_nc = VectorizationBase.num_cores()
     jl_nt = Threads.nthreads()
     return _print_num_threads_warning(sys_nc, jl_nt)
 end
diff --git a/src/public_mul.jl b/src/public_mul.jl
index 41bc11c..3eee603 100644
--- a/src/public_mul.jl
+++ b/src/public_mul.jl
@@ -95,7 +95,7 @@ function mul_serial!(C::AbstractArray{T}, A::AbstractArray{T}, B::AbstractArray{
 end
 
 function mul!(C::StructArray{Complex{T}}, A::StructArray{Complex{T}}, B::StructArray{Complex{T}};
-              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.re, A.re, B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
@@ -113,7 +113,7 @@ function mul!(C::StructArray{Complex{T}}, A::StructArray{Complex{T}}, B::StructA
 end
 
 function mul_serial!(C::StructArray{Complex{T}}, A::StructArray{Complex{T}}, B::StructArray{Complex{T}};
-                              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+                              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.re, A.re, B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
@@ -133,7 +133,7 @@ end
 function mul!(C::Adjoint{Complex{T}, <:StructArray{Complex{T}}},
               A::Adjoint{Complex{T}, <:StructArray{Complex{T}}},
               B::StructArray{Complex{T}};
-              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.parent.re', A.parent.re', B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
@@ -155,7 +155,7 @@ end
 function mul_serial!(C::Adjoint{Complex{T}, <:StructArray{Complex{T}}},
                               A::Adjoint{Complex{T}, <:StructArray{Complex{T}}},
                               B::StructArray{Complex{T}};
-                              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+                              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.parent.re', A.parent.re', B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
@@ -177,7 +177,7 @@ end
 function mul!(C::Transpose{Complex{T}, <:StructArray{Complex{T}}},
               A::Transpose{Complex{T}, <:StructArray{Complex{T}}},
               B::StructArray{Complex{T}};
-              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.parent.re |> transpose, A.parent.re |> transpose, B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
@@ -197,7 +197,7 @@ end
 function mul_serial!(C::Transpose{Complex{T}, <:StructArray{Complex{T}}},
                               A::Transpose{Complex{T}, <:StructArray{Complex{T}}},
                               B::StructArray{Complex{T}};
-                              block_size = DEFAULT_BLOCK_SIZE, sizecheck=true) where {T <: Eltypes}
+                              block_size = default_block_size(), sizecheck=true) where {T <: Eltypes}
     sizecheck && check_compatible_sizes(C.parent.re |> transpose, A.parent.re |> transpose, B.re)
 
     _block_size = choose_block_size(C, A, B, block_size)
diff --git a/test/runtests.jl b/test/runtests.jl
index 8a80f56..90b0526 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -14,7 +14,7 @@ using Test: @testset, @test, @test_logs, @test_throws
 
 include("test_suite_preamble.jl")
 
-@info("VectorizationBase.NUM_CORES is $(VectorizationBase.NUM_CORES)")
+@info("VectorizationBase.num_cores() is $(VectorizationBase.num_cores())")
 
 include("block_operations.jl")
 include("public_mul_coverage.jl")