diff --git a/Libraries/LibWeb/WebGL/WebGLRenderingContextOverloads.idl b/Libraries/LibWeb/WebGL/WebGLRenderingContextOverloads.idl
index e2a3dbef089..4d2570d8080 100644
--- a/Libraries/LibWeb/WebGL/WebGLRenderingContextOverloads.idl
+++ b/Libraries/LibWeb/WebGL/WebGLRenderingContextOverloads.idl
@@ -12,6 +12,9 @@ typedef (ImageBitmap or
 // FIXME: BufferSource should be a Float32Array
 typedef (BufferSource or sequence<GLfloat>) Float32List;
 
+// FIXME: BufferSource should be a Int32Array
+typedef (BufferSource or sequence<GLint>) Int32List;
+
 // https://registry.khronos.org/webgl/specs/latest/1.0/#5.14
 interface mixin WebGLRenderingContextOverloads {
     undefined bufferData(GLenum target, GLsizeiptr size, GLenum usage);
@@ -35,10 +38,10 @@ interface mixin WebGLRenderingContextOverloads {
     undefined uniform3fv(WebGLUniformLocation? location, Float32List v);
     undefined uniform4fv(WebGLUniformLocation? location, Float32List v);
 
-    [FIXME] undefined uniform1iv(WebGLUniformLocation? location, Int32List v);
-    [FIXME] undefined uniform2iv(WebGLUniformLocation? location, Int32List v);
-    [FIXME] undefined uniform3iv(WebGLUniformLocation? location, Int32List v);
-    [FIXME] undefined uniform4iv(WebGLUniformLocation? location, Int32List v);
+    undefined uniform1iv(WebGLUniformLocation? location, Int32List v);
+    undefined uniform2iv(WebGLUniformLocation? location, Int32List v);
+    undefined uniform3iv(WebGLUniformLocation? location, Int32List v);
+    undefined uniform4iv(WebGLUniformLocation? location, Int32List v);
 
     // FIXME: Float32Array should be a Float32List
     undefined uniformMatrix2fv(WebGLUniformLocation? location, GLboolean transpose, Float32List value);
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
index 67f5c898bca..083dadccc44 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateWebGLRenderingContext.cpp
@@ -633,6 +633,25 @@ public:
             continue;
         }
 
+        if (function.name == "uniform1iv"sv || function.name == "uniform2iv"sv || function.name == "uniform3iv"sv || function.name == "uniform4iv"sv) {
+            auto number_of_matrix_elements = function.name.substring_view(7, 1);
+            function_impl_generator.set("number_of_matrix_elements", number_of_matrix_elements);
+            function_impl_generator.append(R"~~~(
+    if (v.has<Vector<int>>()) {
+        auto& data = v.get<Vector<int>>();
+        glUniform@number_of_matrix_elements@iv(location->handle(), data.size() / @number_of_matrix_elements@, data.data());
+        return;
+    }
+
+    auto& typed_array_base = static_cast<JS::TypedArrayBase&>(*v.get<GC::Root<WebIDL::BufferSource>>()->raw_object());
+    auto& int32_array = verify_cast<JS::Int32Array>(typed_array_base);
+    int const* data = int32_array.data().data();
+    auto count = int32_array.array_length().length() / @number_of_matrix_elements@;
+    glUniform@number_of_matrix_elements@iv(location->handle(), count, data);
+)~~~");
+            continue;
+        }
+
         if (function.name == "getParameter"sv) {
             generate_get_parameter(function_impl_generator);
             continue;