diff --git a/test/pdmtypes.jl b/test/pdmtypes.jl
index ab4bac1..2d44b80 100644
--- a/test/pdmtypes.jl
+++ b/test/pdmtypes.jl
@@ -305,11 +305,14 @@ using Test
         @test C - B ≈ Matrix(C) - Matrix(B)
     end
 
-    # https://github.com/JuliaStats/PDMats.jl/pull/207
-    @testset "PDMat from SymTridiagonal" begin
-        S = SymTridiagonal(fill(4, 4), fill(1, 3))
-        M = @inferred(PDMat(S))
-        @test M isa PDMat{Int,<:SymTridiagonal,<:Cholesky}
-        @test M == S
+    # Ref https://github.com/JuliaStats/PDMats.jl/pull/207
+    # Note: `cholesky(::SymTridiagonal)` requires https://github.com/JuliaLang/julia/pull/44076
+    if VERSION >= v"1.8.0-DEV.1526"
+        @testset "PDMat from SymTridiagonal" begin
+            S = SymTridiagonal(fill(4, 4), fill(1, 3))
+            M = @inferred(PDMat(S))
+            @test M isa PDMat{Int,<:SymTridiagonal,<:Cholesky}
+            @test M == S
+        end
     end
 end