diff --git a/changelog.md b/changelog.md
--- a/changelog.md
+++ b/changelog.md
@@ -1,3 +1,8 @@
+texmath (0.13.3.3)
+
+  * Typst writer: add some needed `$` inside `[..]` content blocks.
+    This fixes bugs in scaling and phantom on typst (#303).
+
 texmath (0.13.3.2)
 
   * Typst writer: preserve lineless fractions (#302, Don Yin).
diff --git a/src/Text/TeXMath/Writers/Typst.hs b/src/Text/TeXMath/Writers/Typst.hs
--- a/src/Text/TeXMath/Writers/Typst.hs
+++ b/src/Text/TeXMath/Writers/Typst.hs
@@ -244,11 +244,11 @@
 writeExp (ECancel ForwardSlash e) = "cancel(" <> writeExp e <> ")"
 writeExp (ECancel BackSlash e) = "cancel(" <> writeExp e <> ", inverted: #true)"
 writeExp (ECancel XSlash e) = "cancel(" <> writeExp e <> ", cross: #true)"
-writeExp (EPhantom e) = "#hide[" <> writeExp e <> "]"
+writeExp (EPhantom e) = "#hide[$" <> writeExp e <> "$]"
 writeExp (EScaled size e) =
   "#scale(x: " <> tshow (floor (100 * size) :: Int) <>
           "%, y: " <> tshow (floor (100 * size) :: Int) <>
-          "%)[" <> writeExp e <> "]"
+          "%)[$" <> writeExp e <> "$]"
 writeExp (EDelimited "(" ")" [ Right (EFraction NoLineFrac x y) ]) =
   "binom(" <> writeExp x <> ", " <> writeExp y <> ")"
 writeExp (EDelimited "(" ")" [Right (EArray _aligns rows)])
diff --git a/test/writer/typst/phantom.test b/test/writer/typst/phantom.test
--- a/test/writer/typst/phantom.test
+++ b/test/writer/typst/phantom.test
@@ -7,4 +7,4 @@
     ]
 ]
 >>> typst
-(#hide[1 / 2])
+(#hide[$1 / 2$])
diff --git a/test/writer/typst/sphere_volume.test b/test/writer/typst/sphere_volume.test
--- a/test/writer/typst/sphere_volume.test
+++ b/test/writer/typst/sphere_volume.test
@@ -128,6 +128,6 @@
 >>> typst
 S = { 0 lt.eq phi.alt lt.eq 2 pi\,med 0 lt.eq theta lt.eq pi\,med 0 lt.eq rho lt.eq R } upright(V o l u m e) & = integral.triple_S #h(-0.167em) rho^2 sin theta thin upright(d) rho thin upright(d) theta thin upright(d) phi.alt\
  & = integral_0^(2 pi) #h(-0.167em) upright(d) phi.alt thin integral_0^pi #h(-0.167em) sin theta thin upright(d) theta thin integral_0^R #h(-0.167em) rho^2 upright(d) rho\
- & = phi.alt #scale(x: 180%, y: 180%)[\|]_0^(2 pi) med (- cos theta) #scale(x: 180%, y: 180%)[\|]_0^pi med 1 / 3 rho^3 #scale(x: 180%, y: 180%)[\|]_0^R\
+ & = phi.alt #scale(x: 180%, y: 180%)[$\|$]_0^(2 pi) med (- cos theta) #scale(x: 180%, y: 180%)[$\|$]_0^pi med 1 / 3 rho^3 #scale(x: 180%, y: 180%)[$\|$]_0^R\
  & = 2 pi times 2 times 1 / 3 R^3\
  & = 4 / 3 pi R^3
diff --git a/texmath.cabal b/texmath.cabal
--- a/texmath.cabal
+++ b/texmath.cabal
@@ -1,5 +1,5 @@
 Name:                texmath
-Version:             0.13.3.2
+Version:             0.13.3.3
 Cabal-Version:       2.0
 Build-type:          Simple
 Synopsis:            Conversion between math formats.