diff --git a/crates/cli/tests/dynamic_linking_test.rs b/crates/cli/tests/dynamic_linking_test.rs
index 37dd5a7f..12b4ffdf 100644
--- a/crates/cli/tests/dynamic_linking_test.rs
+++ b/crates/cli/tests/dynamic_linking_test.rs
@@ -127,6 +127,8 @@ fn test_producers_section_present() -> Result<()> {
 }
 
 #[test]
+// Temporarily ignore given that Javy.JSON is disabled by default.
+#[ignore]
 fn javy_json_identity() -> Result<()> {
     let src = r#"
         console.log(Javy.JSON.toStdout(Javy.JSON.fromStdin()));
diff --git a/crates/core/src/runtime.rs b/crates/core/src/runtime.rs
index e50beacc..b973bd7b 100644
--- a/crates/core/src/runtime.rs
+++ b/crates/core/src/runtime.rs
@@ -8,10 +8,11 @@ pub(crate) fn new(shared_config: SharedConfig) -> Result<Runtime> {
         .text_encoding(shared_config.contains(SharedConfig::TEXT_ENCODING))
         .redirect_stdout_to_stderr(shared_config.contains(SharedConfig::REDIRECT_STDOUT_TO_STDERR))
         .javy_stream_io(shared_config.contains(SharedConfig::JAVY_STREAM_IO))
-        .override_json_parse_and_stringify(
-            shared_config.contains(SharedConfig::OVERRIDE_JSON_PARSE_AND_STRINGIFY),
-        )
-        .javy_json(shared_config.contains(SharedConfig::JAVY_JSON));
+        // Due to an issue with our custom serializer and property accesses
+        // we're disabling this temporarily. It will be enabled once we have a
+        // fix forward.
+        .override_json_parse_and_stringify(false)
+        .javy_json(false);
 
     Runtime::new(std::mem::take(config))
 }