diff --git a/crates/miniprofiler_ui/src/miniprofiler_ui.rs b/crates/miniprofiler_ui/src/miniprofiler_ui.rs
index 1f95dc3d230e7c50b4960560a96c9007fd77aab8..12b2bce77b5866e885483a847d40647f525207e6 100644
--- a/crates/miniprofiler_ui/src/miniprofiler_ui.rs
+++ b/crates/miniprofiler_ui/src/miniprofiler_ui.rs
@@ -544,7 +544,7 @@ impl Render for ProfilerWindow {
 
                                         let path = cx.prompt_for_new_path(
                                             &active_path,
-                                            Some("performance_profile.miniprof"),
+                                            Some("performance_profile.miniprof.json"),
                                         );
 
                                         cx.background_spawn(async move {
diff --git a/crates/zed/src/reliability.rs b/crates/zed/src/reliability.rs
index b291b9c8493db75e20282c8c9bc5a3750fb5e705..d8dc1c4f8fe412b5e8eeb6b09e482a9ed243aaa3 100644
--- a/crates/zed/src/reliability.rs
+++ b/crates/zed/src/reliability.rs
@@ -144,7 +144,7 @@ fn cleanup_old_hang_traces() {
                 entry
                     .path()
                     .extension()
-                    .is_some_and(|ext| ext == "miniprof")
+                    .is_some_and(|ext| ext == "json" || ext == "miniprof")
             })
             .collect();
 
@@ -175,7 +175,7 @@ fn save_hang_trace(
         .collect::<Vec<_>>();
 
     let trace_path = paths::hang_traces_dir().join(&format!(
-        "hang-{}.miniprof",
+        "hang-{}.miniprof.json",
         hang_time.format("%Y-%m-%d_%H-%M-%S")
     ));
 
@@ -193,7 +193,7 @@ fn save_hang_trace(
                 entry
                     .path()
                     .extension()
-                    .is_some_and(|ext| ext == "miniprof")
+                    .is_some_and(|ext| ext == "json" || ext == "miniprof")
             })
             .collect();
 
diff --git a/docs/src/performance.md b/docs/src/performance.md
index 09abecdeffe4e268413a73b189ef301511b1a20e..e974d63f8816b68d30a1c06d7cbbc083f8564327 100644
--- a/docs/src/performance.md
+++ b/docs/src/performance.md
@@ -78,7 +78,7 @@ Download the importer
 - `cd import && mkdir build && cd build`
 - Run cmake to generate build files: `cmake -G Ninja -DCMAKE_BUILD_TYPE=Release ..`
 - Build the importer: `ninja`
-- Run the importer on the trace file: `./tracy-import-miniprofiler /path/to/trace.miniprof /path/to/output.tracy`
+- Run the importer on the trace file: `./tracy-import-miniprofiler /path/to/trace.miniprof.json /path/to/output.tracy`
 - Open the trace in tracy:
   - If you're on windows download the v0.12.2 version from the releases on the upstream repo
   - If you're on other platforms open it on the website: https://tracy.nereid.pl/ (the version might mismatch so your luck might vary, we need to host our own ideally..)
@@ -87,7 +87,7 @@ Download the importer
 
 - Run the action: `zed open performance profiler`
 - Hit the save button. This opens a save dialog or if that fails to open the trace gets saved in your working directory.
-- Convert the profile so it can be imported in tracy using the importer: `./tracy-import-miniprofiler <path to performance_profile.miniprof> output.tracy`
+- Convert the profile so it can be imported in tracy using the importer: `./tracy-import-miniprofiler <path to performance_profile.miniprof.json> output.tracy`
 - Go to <https://tracy.nereid.pl/> hit the 'power button' in the top left and then open saved trace.
 - Now zoom in to see the tasks and how long they took