diff --git a/Dockerfile b/Dockerfile
index 4783c08..6356d3a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,7 @@
-FROM gitea/gitea:1.20.5
+FROM gitea/gitea:1.23.1
 
-RUN apk --no-cache add py3-pip pandoc-cli
+RUN apk --no-cache add pipx pandoc-cli
 
-RUN pip3 install --upgrade pip
-RUN pip3 install nbconvert
+RUN pipx install --global nbconvert
 
 COPY custom/app.ini /data/gitea/conf/app.ini
diff --git a/custom/app.ini b/custom/app.ini
index df286c2..2a5f074 100644
--- a/custom/app.ini
+++ b/custom/app.ini
@@ -28,7 +28,7 @@ DISABLE_REGISTRATION = true
 [markup.jupyter]
 ENABLED = true
 FILE_EXTENSIONS = .ipynb
-RENDER_COMMAND = "jupyter nbconvert --stdin --stdout --to html --template basic"
+RENDER_COMMAND = "jupyter-nbconvert --stdin --stdout --to html --template basic"
 IS_INPUT_FILE = false
 
 [markup.sanitizer.jupyter.img]