diff --git a/mupdf-sys/build.rs b/mupdf-sys/build.rs
index d396973..6e918c2 100644
--- a/mupdf-sys/build.rs
+++ b/mupdf-sys/build.rs
@@ -351,6 +351,13 @@ fn build_libmupdf() {
                 profile
             );
         }
+
+        if profile == "Debug" {
+            println!("cargo:rustc-link-lib=dylib=ucrtd");
+            println!("cargo:rustc-link-lib=dylib=vcruntimed");
+            println!("cargo:rustc-link-lib=dylib=msvcrtd");
+        }
+
         println!("cargo:rustc-link-lib=dylib=libmupdf");
         println!("cargo:rustc-link-lib=dylib=libthirdparty");
     } else {
diff --git a/mupdf-sys/mupdf b/mupdf-sys/mupdf
index e32a0e2..31b25c5 160000
--- a/mupdf-sys/mupdf
+++ b/mupdf-sys/mupdf
@@ -1 +1 @@
-Subproject commit e32a0e27163cccc98eb4b509ea1493cdac8b4930
+Subproject commit 31b25c586c2db808a0817dd785c9f56243581255
diff --git a/mupdf-sys/wrapper.c b/mupdf-sys/wrapper.c
index 5ce5a28..1d848a5 100644
--- a/mupdf-sys/wrapper.c
+++ b/mupdf-sys/wrapper.c
@@ -3012,7 +3012,7 @@ void mupdf_pdf_page_set_crop_box(fz_context *ctx, pdf_page *page, fz_rect rect,
 {
     fz_try(ctx)
     {
-        fz_rect mediabox = pdf_bound_page(ctx, page);
+        fz_rect mediabox = pdf_bound_page(ctx, page, FZ_MEDIA_BOX);
         pdf_obj *obj = pdf_dict_get_inheritable(ctx, page->obj, PDF_NAME(MediaBox));
         if (obj)
         {
diff --git a/tests/files/utf8-error-on-this-file.pdf b/tests/files/utf8-error-on-this-file.pdf
new file mode 100644
index 0000000..b06d779
Binary files /dev/null and b/tests/files/utf8-error-on-this-file.pdf differ
diff --git a/tests/test_issues.rs b/tests/test_issues.rs
index 00ceab7..c99610f 100644
--- a/tests/test_issues.rs
+++ b/tests/test_issues.rs
@@ -80,3 +80,21 @@ fn test_issue_60_display_list() {
         })
         .collect();
 }
+
+#[test]
+fn test_issue_86_invalid_utf8() {
+    let doc = PdfDocument::open("tests/files/utf8-error-on-this-file.pdf").unwrap();
+    for (idx, page) in doc.pages().unwrap().enumerate() {
+        let page = page.unwrap();
+        let text = page.to_text();
+        assert!(text.is_ok());
+        println!("page: {idx}, text: {}", text.unwrap());
+
+        let json = page.stext_page_as_json_from_page(1.0);
+        assert!(json.is_ok());
+
+        // Validate JSON parsing
+        let parsed_json: Result<serde_json::Value, _> = serde_json::from_str(&json.unwrap());
+        assert!(parsed_json.is_ok());
+    }
+}