diff --git a/ballista/scheduler/Cargo.toml b/ballista/scheduler/Cargo.toml
index a34721576..b11b091f5 100644
--- a/ballista/scheduler/Cargo.toml
+++ b/ballista/scheduler/Cargo.toml
@@ -56,7 +56,7 @@ datafusion-proto = { workspace = true }
 etcd-client = { version = "0.12", optional = true }
 flatbuffers = { version = "23.5.26" }
 futures = "0.3"
-graphviz-rust = "0.6.1"
+graphviz-rust = "0.8.0"
 http = "0.2"
 http-body = "0.4"
 hyper = "0.14.4"
diff --git a/ballista/scheduler/src/api/handlers.rs b/ballista/scheduler/src/api/handlers.rs
index 94b2c90d3..0645147c7 100644
--- a/ballista/scheduler/src/api/handlers.rs
+++ b/ballista/scheduler/src/api/handlers.rs
@@ -345,6 +345,7 @@ pub(crate) async fn get_job_svg_graph<T: AsLogicalPlan, U: AsExecutionPlan>(
                     &mut PrinterContext::default(),
                     vec![CommandArg::Format(Format::Svg)],
                 )
+                .map(|bytes| String::from_utf8_lossy(&bytes).to_string())
                 .map_err(|_| warp::reject())
             } else {
                 Ok("Cannot parse graph".to_string())