diff --git a/Sources/SwiftMath/MathRender/MTMathAtomFactory.swift b/Sources/SwiftMath/MathRender/MTMathAtomFactory.swift
index 6bef6d9..6b79c0a 100644
--- a/Sources/SwiftMath/MathRender/MTMathAtomFactory.swift
+++ b/Sources/SwiftMath/MathRender/MTMathAtomFactory.swift
@@ -372,6 +372,7 @@ public class MTMathAtomFactory {
         "triangle" : MTMathAtom(type: .ordinary, value: "\u{25B3}"),
         "imath" : MTMathAtom(type: .ordinary, value: "\u{0001D6A4}"),
         "jmath" : MTMathAtom(type: .ordinary, value: "\u{0001D6A5}"),
+        "upquote" : MTMathAtom(type: .ordinary, value: "\u{0027}"),
         "partial" : MTMathAtom(type: .ordinary, value: "\u{0001D715}"),
 
         // Spacing