diff --git a/peakviewer/peak_canvas_panel.py b/peakviewer/peak_canvas_panel.py
index 00ecfcc..f163135 100644
--- a/peakviewer/peak_canvas_panel.py
+++ b/peakviewer/peak_canvas_panel.py
@@ -318,7 +318,7 @@ def refresh(self) -> None:
 
 		self.canvas.draw()
 
-	def draw_peak(self, project: Project, peak_idx: int) -> None:
+	def draw_peak(self, project: Project, retention_times: List[float]) -> None:
 		"""
 		Draw a set of aligned peaks.
 
@@ -329,7 +329,7 @@ def draw_peak(self, project: Project, peak_idx: int) -> None:
 		for ax in self.axes:
 			ax.clear()
 
-		draw_peaks(project, peak_idx, self.figure, self.axes)
+		draw_peaks(project, retention_times, self.figure, self.axes)
 
 		self.refresh()
 
diff --git a/peakviewer/peak_viewer_frame.py b/peakviewer/peak_viewer_frame.py
index 6eef87b..330c0ce 100644
--- a/peakviewer/peak_viewer_frame.py
+++ b/peakviewer/peak_viewer_frame.py
@@ -230,7 +230,7 @@ def draw_peak(self) -> None:
 
 		self.toolbar_name_panel.SetLabelText('\n'.join(textwrap.wrap(peak.hits[0].name, width=40)))
 
-		self.panel.draw_peak(self.project, peak.meta["peak_number"])
+		self.panel.draw_peak(self.project, peak.rt_list)
 
 	def load_project(self, filename: PathLike) -> None:
 		"""
diff --git a/requirements.txt b/requirements.txt
index 8312280..e238e66 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ click>=8.1.6
 consolekit>=1.5.1
 domdf-python-tools>=3.6.1
 libgunshotmatch>=0.1.0
-libgunshotmatch-mpl@ git+https://github.com/GunShotMatch/libgunshotmatch-mpl
+libgunshotmatch-mpl>=0.6.0b1
 matplotlib>=3.7.2
 wxpython>=4.0.7; platform_system == "Windows"
 wxpython>=4.0.7; platform_system == "Darwin"