diff --git a/PKG-INFO b/PKG-INFO
index 59a2ee4..4407908 100644
--- a/PKG-INFO
+++ b/PKG-INFO
@@ -21,7 +21,6 @@ Requires-Dist: PyQt5-Qt5 (>=5.15,<5.15.11) ; extra == "qt5"
 Requires-Dist: PyQt6 (>=6.2,<7.0) ; extra == "qt6"
 Requires-Dist: QtPy (>=2.0.1,<3.0.0)
 Requires-Dist: appdirs (>=1.4.4,<2.0.0)
-Requires-Dist: appnope (>=0.1.3,<0.2.0)
 Requires-Dist: atomicwrites (>=1.4.0,<2.0.0)
 Requires-Dist: attrs (>=21.2.0,<22.0.0)
 Requires-Dist: click (>=8.0.1,<9.0.0)
diff --git a/corrscope/corrscope.py b/corrscope/corrscope.py
index 79a6cba..d20b4c4 100644
--- a/corrscope/corrscope.py
+++ b/corrscope/corrscope.py
@@ -197,11 +197,6 @@ class Arguments:
 
 
 def worker_create_renderer(renderer_params: RendererParams, shmem_names: List[str]):
-    import appnope
-
-    # Disable power saving for renderer processes.
-    appnope.nope()
-
     global WORKER_RENDERER
     global SHMEMS
 
diff --git a/corrscope/gui/__init__.py b/corrscope/gui/__init__.py
index f983021..afe2993 100644
--- a/corrscope/gui/__init__.py
+++ b/corrscope/gui/__init__.py
@@ -10,7 +10,6 @@ from pathlib import Path
 from types import MethodType
 from typing import Optional, List, Any, Tuple, Callable, Union, Dict, Sequence, NewType
 
-import appnope
 import qtpy.QtCore as qc
 import qtpy.QtWidgets as qw
 import attr
@@ -803,22 +802,21 @@ class CorrJob(qc.QObject):
         """Called in separate thread."""
         cfg = self.cfg
         arg = self.arg
-        with appnope.nope_scope(reason="corrscope preview/render active"):
-            try:
-                self.corr = CorrScope(cfg, arg)
-                self.corr.play()
+        try:
+            self.corr = CorrScope(cfg, arg)
+            self.corr.play()
 
-            except paths.MissingFFmpegError:
-                arg.on_end()
-                self.ffmpeg_missing.emit()
+        except paths.MissingFFmpegError:
+            arg.on_end()
+            self.ffmpeg_missing.emit()
 
-            except Exception as e:
-                arg.on_end()
-                stack_trace = format_stack_trace(e)
-                self.error.emit(stack_trace)
+        except Exception as e:
+            arg.on_end()
+            stack_trace = format_stack_trace(e)
+            self.error.emit(stack_trace)
 
-            else:
-                arg.on_end()
+        else:
+            arg.on_end()
 
 
 class CorrThread(Thread):
diff --git a/pyproject.toml b/pyproject.toml
index 9c281ee..59cbe64 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,6 @@ QtPy = "^2.0.1"
 PyQt5 = {version = "^5.15", optional = true}
 PyQt5-Qt5 = {version = "^5.15,<5.15.11", optional = true}
 PyQt6 = {version = "^6.2", optional = true}
-appnope = "^0.1.3"
 
 [tool.poetry.extras]
 qt5 = ["PyQt5", "PyQt5-Qt5"]