diff --git a/dollar.rkt b/dollar.rkt
index c8458223a..785b61e2d 100644
--- a/dollar.rkt
+++ b/dollar.rkt
@@ -10,6 +10,7 @@
          "katex-convert-unicode.rkt"
          "mathjax-convert-unicode.rkt"
          racket/list
+         version-case
          (only-in xml cdata)
          (only-in racket/match match)
          (only-in racket/system process)
@@ -301,40 +302,42 @@ EOTEX
   (elem #:style math-inline-style-katex
                 (map (λ (s) (katex-convert-unicode s #t)) (flatten strs))))
 
-(define current-tex2svg-path (make-parameter #f))
+(version-case
+ [(version>= (version) "6.11.0.900"]
+  (define current-tex2svg-path (make-parameter #f))
 
-(define (find-tex2svg)
-  (define paths
-    (list
-     "./node_modules/.bin/"
-     "/usr/local/lib/node_modules/mathjax-node-cli/bin/"
-     "/usr/lib/node_modules/mathjax-node-cli/bin/"
-     "/usr/local/bin/"
-     "/usr/local/sbin/"
-     "/usr/bin/"
-     "/usr/sbin/"))
-  (for/or ([path paths])
-    (file-exists? (format "~a/tex2svg" path))))
+  (define (find-tex2svg)
+    (define paths
+      (list
+       "./node_modules/.bin/"
+       "/usr/local/lib/node_modules/mathjax-node-cli/bin/"
+       "/usr/lib/node_modules/mathjax-node-cli/bin/"
+       "/usr/local/bin/"
+       "/usr/local/sbin/"
+       "/usr/bin/"
+       "/usr/sbin/"))
+    (for/or ([path paths])
+      (file-exists? (format "~a/tex2svg" path))))
 
-(define tex2svg
-  (let ([tex2svg-path (find-tex2svg)])
-    (lambda (#:inline [inline #f] strs)
-      (if (or (current-tex2svg-path) tex2svg-path)
-          (match (process (format
-                           "tex2svg ~a'~a'"
-                           (if inline "--inline " "")
-                           (apply string-append strs)))
-            [`(,stdout . ,_)
-             (port->string stdout)])
-          (error 'tex2svg "Cannot find tex2svg in path or common places; set path manually with current-tex2svg-path.")))))
+  (define tex2svg
+    (let ([tex2svg-path (find-tex2svg)])
+      (lambda (#:inline [inline #f] strs)
+        (if (or (current-tex2svg-path) tex2svg-path)
+            (match (process (format
+                             "tex2svg ~a'~a'"
+                             (if inline "--inline " "")
+                                 (apply string-append strs)))
+              [`(,stdout . ,_)
+               (port->string stdout)])
+            (error 'tex2svg "Cannot find tex2svg in path or common places; set path manually with current-tex2svg-path.")))))
 
 
-(define ($-tex2svg strs)
-  (elem #:style (style #f
-                       (list
-                        (xexpr-property
-                         (cdata #f #f (tex2svg #:inline #t (flatten strs)))
-                         (cdata #f #f ""))))))
+  (define ($-tex2svg strs)
+    (elem #:style (style #f
+                         (list
+                          (xexpr-property
+                           (cdata #f #f (tex2svg #:inline #t (flatten strs)))
+                           (cdata #f #f ""))))))])
 
 (define ($$-mathjax strs)
   (elem #:style math-display-style-mathjax strs))
@@ -343,12 +346,14 @@ EOTEX
   (elem #:style math-display-style-katex
                 (map (λ (s) (katex-convert-unicode s #t)) (flatten strs))))
 
-(define ($$-tex2svg strs)
-  (elem #:style (style #f
-                       (list
-                        (xexpr-property
-                         (cdata #f #f (tex2svg (flatten strs)))
-                         (cdata #f #f ""))))))
+(version-case
+ [(version>= (version) "6.11.0.900"]
+  (define ($$-tex2svg strs)
+    (elem #:style (style #f
+                         (list
+                          (xexpr-property
+                           (cdata #f #f (tex2svg (flatten strs)))
+                           (cdata #f #f ""))))))])
 
 (define $-html-handler (make-parameter $-katex))
 (define $$-html-handler (make-parameter $$-katex))
@@ -363,10 +368,12 @@ EOTEX
   ($$-html-handler $$-mathjax)
   (void))
 
-(define (use-tex2svg)
-  ($-html-handler $-tex2svg)
-  ($$-html-handler $$-tex2svg)
-  (void))
+(version-case
+ [(version>= (version) "6.11.0.900"]
+  (define (use-tex2svg)
+    ($-html-handler $-tex2svg)
+    ($$-html-handler $$-tex2svg)
+    (void))])
 
 (define ($ . strs)
   (let ([$- ($-html-handler)])
diff --git a/scribblings/scribble-math.scrbl b/scribblings/scribble-math.scrbl
index ee5ddf193..2dc1e2b43 100644
--- a/scribblings/scribble-math.scrbl
+++ b/scribblings/scribble-math.scrbl
@@ -172,17 +172,19 @@ details see the documentation of @racket[with-html5].
  render the SVG directly to the HTML document.
  This means no new scripts or stylesheets are added to the document.
  It also has no style, so its style cannot be customized.
- }
+
+ This procedure requires Racket 6.12 or later.}
 
 @defproc[($$-tex2svg [math (listof? string?)]) element?]{
-Produces an @racket[element?] which contains the given
-@racket[math] rendered as an HTML SVG literal.
-It is rendered in @tech{display mode} math using @tt{tex2svg}.
-More precisely, the resulting element uses the @racket[xexpr-property] to
-render the SVG directly to the HTML document.
-This means no new scripts or stylesheets are added to the document.
-It also has no style, so its style cannot be customized.
-}
+ Produces an @racket[element?] which contains the given
+ @racket[math] rendered as an HTML SVG literal.
+ It is rendered in @tech{display mode} math using @tt{tex2svg}.
+ More precisely, the resulting element uses the @racket[xexpr-property] to
+ render the SVG directly to the HTML document.
+ This means no new scripts or stylesheets are added to the document.
+ It also has no style, so its style cannot be customized.
+
+ This procedure requires Racket 6.12 or later.}
 
 @defproc[(use-katex) void?]{
  This shorthand calls @racket[($-html-handler $-katex)]
@@ -232,15 +234,18 @@ It also has no style, so its style cannot be customized.
  @tt{tex2svg} will only be used when rendering an HTML document, and only if it
  uses @racket[$] or @racket[$$] to render math. It is therefore safe to call
  this function in libraries to change the default handler.
-}
+
+ This procedure requires Racket 6.12 or later.}
 
 @defparam[current-tex2svg-path path path? #:value #f]{
-A parameter whose value is the path to the @tt{tex2svg} binary.
-This binary is used to transform math code into HTML when using the @tt{tex2svg}
-backend.
-The functions @racket[$-tex2svg] and @racket[$$-tex2svg] use this parameter only
-when rendering the document as HTML.
-}
+ A parameter whose value is the path to the @tt{tex2svg} binary.
+ This binary is used to transform math code into HTML when using the @tt{tex2svg}
+ backend.
+ 
+ The functions @racket[$-tex2svg] and @racket[$$-tex2svg] use this parameter only
+ when rendering the document as HTML.
+
+ This parameter requires Racket 6.12 or later.}
 
 
 @;@$${\sum_{i=0}ⁿ xᵢ³}