diff --git a/flake.lock b/flake.lock
index c89bc215b..f22944871 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1756770412,
-        "narHash": "sha256-+uWLQZccFHwqpGqr2Yt5VsW/PbeJVTn9Dk6SHWhNRPw=",
+        "lastModified": 1763759067,
+        "narHash": "sha256-LlLt2Jo/gMNYAwOgdRQBrsRoOz7BPRkzvNaI/fzXi2Q=",
         "owner": "hercules-ci",
         "repo": "flake-parts",
-        "rev": "4524271976b625a4a605beefd893f270620fd751",
+        "rev": "2cccadc7357c0ba201788ae99c4dfa90728ef5e0",
         "type": "github"
       },
       "original": {
@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1757487488,
-        "narHash": "sha256-zwE/e7CuPJUWKdvvTCB7iunV4E/+G0lKfv4kk/5Izdg=",
+        "lastModified": 1763835633,
+        "narHash": "sha256-HzxeGVID5MChuCPESuC0dlQL1/scDKu+MmzoVBJxulM=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "ab0f3607a6c7486ea22229b92ed2d355f1482ee0",
+        "rev": "050e09e091117c3d7328c7b2b7b577492c43c134",
         "type": "github"
       },
       "original": {
diff --git a/nix/package/default.nix b/nix/package/default.nix
index 5127d70c1..52438b426 100644
--- a/nix/package/default.nix
+++ b/nix/package/default.nix
@@ -70,7 +70,7 @@ python3Packages.buildPythonApplication {
     "\${qtWrapperArgs[@]}"
   ];
 
-  pythonRemoveDeps = lib.optional (!withJXLSupport) [ "pillow_jxl" ];
+  pythonRemoveDeps = lib.optional (!withJXLSupport) "pillow_jxl";
   pythonRelaxDeps = [
     "numpy"
     "pillow"
@@ -96,7 +96,6 @@ python3Packages.buildPythonApplication {
       numpy
       opencv-python
       pillow
-      pillow-avif-plugin
       pillow-heif
       py7zr
       pydantic
diff --git a/nix/shell.nix b/nix/shell.nix
index e342f56c4..81965fc80 100644
--- a/nix/shell.nix
+++ b/nix/shell.nix
@@ -87,7 +87,7 @@ pkgs.mkShellNoCC {
   env = {
     QT_QPA_PLATFORM = "wayland;xcb";
 
-    UV_NO_SYNC = "1";
+    UV_NO_SYNC = 1;
     UV_PYTHON_DOWNLOADS = "never";
   };
 
@@ -111,7 +111,8 @@ pkgs.mkShellNoCC {
       fi
 
       source "''${venv}"/bin/activate
-      PYTHONPATH=${pythonPath}''${PYTHONPATH:+:}''${PYTHONPATH:-}
+      PYTHONPATH=${pythonPath}''${PYTHONPATH:+:''${PYTHONPATH}}
+      export PYTHONPATH
 
       if [ ! -f "''${venv}"/pyproject.toml ] || ! diff --brief pyproject.toml "''${venv}"/pyproject.toml >/dev/null; then
           printf '%s\n' 'Installing dependencies, pyproject.toml changed...' >&2
diff --git a/pyproject.toml b/pyproject.toml
index 4f06cf884..cb095d849 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,8 +16,7 @@ dependencies = [
     "mutagen~=1.47",
     "numpy~=2.2",
     "opencv_python~=4.11",
-    "Pillow>=10.2,<=11",
-    "pillow-avif-plugin~=1.5",
+    "Pillow>=10.2,<12",
     "pillow-heif~=0.22",
     "pillow-jxl-plugin~=1.3",
     "py7zr==1.0.0",
diff --git a/src/tagstudio/qt/previews/renderer.py b/src/tagstudio/qt/previews/renderer.py
index f47d534ac..566ab7aed 100644
--- a/src/tagstudio/qt/previews/renderer.py
+++ b/src/tagstudio/qt/previews/renderer.py
@@ -19,7 +19,6 @@
 
 import cv2
 import numpy as np
-import pillow_avif  # noqa: F401 # pyright: ignore[reportUnusedImport]
 import py7zr
 import py7zr.io
 import rarfile