diff --git a/recipes/recipes_emscripten/matplotlib/patches/static-cast.patch b/recipes/recipes_emscripten/matplotlib/patches/static-cast.patch
new file mode 100644
index 000000000..638a67e7b
--- /dev/null
+++ b/recipes/recipes_emscripten/matplotlib/patches/static-cast.patch
@@ -0,0 +1,31 @@
+From 1b919a42a6be3090d4553cafff8f0c0f9e221d60 Mon Sep 17 00:00:00 2001
+From: Ian Thomas <ianthomas23@gmail.com>
+Date: Tue, 14 Jan 2025 14:34:34 +0000
+Subject: [PATCH] Static cast patch
+
+---
+ src/_backend_agg_wrapper.cpp | 6 +++---
+ 1 file changed, 3 insertions(+), 3 deletions(-)
+
+diff --git a/src/_backend_agg_wrapper.cpp b/src/_backend_agg_wrapper.cpp
+index 269e2aaa9e..2bad7f4d0b 100644
+--- a/src/_backend_agg_wrapper.cpp
++++ b/src/_backend_agg_wrapper.cpp
+@@ -250,12 +250,12 @@ PYBIND11_MODULE(_backend_agg, m, py::mod_gil_not_used())
+
+         .def_buffer([](RendererAgg *renderer) -> py::buffer_info {
+             std::vector<py::ssize_t> shape {
+-                renderer->get_height(),
+-                renderer->get_width(),
++                static_cast<py::ssize_t>(renderer->get_height()),
++                static_cast<py::ssize_t>(renderer->get_width()),
+                 4
+             };
+             std::vector<py::ssize_t> strides {
+-                renderer->get_width() * 4,
++                static_cast<py::ssize_t>(renderer->get_width() * 4),
+                 4,
+                 1
+             };
+--
+2.39.3 (Apple Git-146)
diff --git a/recipes/recipes_emscripten/matplotlib/recipe.yaml b/recipes/recipes_emscripten/matplotlib/recipe.yaml
index adb0e43d1..7d022743b 100644
--- a/recipes/recipes_emscripten/matplotlib/recipe.yaml
+++ b/recipes/recipes_emscripten/matplotlib/recipe.yaml
@@ -7,6 +7,7 @@ source:
   sha256: 825919da8957bbc19cec35caf8663b734d34af72a0b040c43b7d8c1b76fdcab7
   patches:
   - patches/fix-threading-and-font-cache.patch
+  - patches/static-cast.patch
 
 build:
   number: 0