diff --git a/pkgs/by-name/ma/math-preview/package.nix b/pkgs/by-name/ma/math-preview/package.nix
index 12a9149382b5..f7e0ee4af92d 100644
--- a/pkgs/by-name/ma/math-preview/package.nix
+++ b/pkgs/by-name/ma/math-preview/package.nix
@@ -6,19 +6,20 @@
   nodejs,
 }:
 
-buildNpmPackage rec {
+buildNpmPackage {
   pname = "math-preview";
-  version = "5.1.1";
+  version = "5.1.2-unstable-2024-08-01";
   inherit nodejs;
 
   src = fetchFromGitLab {
     owner = "matsievskiysv";
     repo = "math-preview";
-    rev = "v${version}";
-    hash = "sha256-P3TZ/D6D2PvwPV6alSrDEQujzgI8DhK4VOuCC0BCIFo=";
+    # FIXME: switch to tag="v${finalAttrs.version}" when upstream eventually cuts a new release.
+    rev = "a2ca3c175468ceaf02bab6cdfd8ef016bda2b98d";
+    hash = "sha256-o7n02aecHWt4Vumj+wdv/yavaVnMuxm8p+Pb+ppDrUE=";
   };
 
-  npmDepsHash = "sha256-GAPhG3haM9UNdj6tCz8I4j7v6rvNbatdu7NjCeENj3s=";
+  npmDepsHash = "sha256-IzJszTaa8NMGRadRdBetfQXJfyjVKKYveTzbPOr07Sw=";
   dontNpmBuild = true;
 
   passthru = {
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 9e256646fa9b..9888b7e9924f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -12890,10 +12890,6 @@ with pkgs;
     cudaSupport = true;
   };
 
-  math-preview = callPackage ../by-name/ma/math-preview/package.nix {
-    nodejs = nodejs_20;
-  };
-
   p4est-sc-dbg = p4est-sc.override { debug = true; };
 
   p4est-dbg = p4est.override { debug = true; };