diff --git a/source/dyaml/stdsumtype.d b/source/dyaml/stdsumtype.d
index 6178b2d..829bdd7 100644
--- a/source/dyaml/stdsumtype.d
+++ b/source/dyaml/stdsumtype.d
@@ -237,7 +237,7 @@
 import std.meta : NoDuplicates;
 import std.meta : anySatisfy, allSatisfy;
 import std.traits : hasElaborateCopyConstructor, hasElaborateDestructor;
-import std.traits : isAssignable, isCopyable, isStaticArray, isRvalueAssignable;
+import std.traits : isAssignable, isCopyable, isStaticArray;
 import std.traits : ConstOf, ImmutableOf, InoutOf, TemplateArgsOf;
 
 // FIXME: std.sumtype : `std.traits : DeducedParameterType` and `std.conv : toCtString`
@@ -251,6 +251,12 @@
         alias DeducedParameterType = T;
 }
 
+/// Compatibility with < v2.095.0
+private struct __InoutWorkaroundStruct{}
+private @property T rvalueOf(T)(inout __InoutWorkaroundStruct = __InoutWorkaroundStruct.init);
+private @property ref T lvalueOf(T)(inout __InoutWorkaroundStruct = __InoutWorkaroundStruct.init);
+private enum isRvalueAssignable(Lhs, Rhs = Lhs) = __traits(compiles, { lvalueOf!Lhs = rvalueOf!Rhs; });
+
 import std.typecons : ReplaceTypeUnless;
 import std.typecons : Flag;
 //import std.conv : toCtString;