diff --git a/app_config.schema.json b/app_config.schema.json
index d4ac947..e14548c 100644
--- a/app_config.schema.json
+++ b/app_config.schema.json
@@ -136,16 +136,16 @@
               "items": {
                 "anyOf": [
                   {
-                    "const": ".conda",
+                    "const": "conda",
                     "enum": [
-                      ".conda"
+                      "conda"
                     ],
                     "type": "string"
                   },
                   {
-                    "const": ".tar.bz2",
+                    "const": "tar.bz2",
                     "enum": [
-                      ".tar.bz2"
+                      "tar.bz2"
                     ],
                     "type": "string"
                   }
diff --git a/app_config.toml b/app_config.toml
index 93ac07e..da763d6 100644
--- a/app_config.toml
+++ b/app_config.toml
@@ -30,7 +30,7 @@ artifact_discovery = "anaconda"
 provenance_url_pattern = "https://github.com/AnacondaRecipes/{feedstock}-feedstock"
 dashboards = ["anaconda"]
 metadata_retrieval = "streamed"
-override_extensions = [".conda"]
+override_extensions = ["conda"]
 
 [channels."pkgs/r"]
 url = "https://repo.anaconda.com/pkgs/r"
@@ -41,13 +41,13 @@ provenance_url_pattern = "https://github.com/AnacondaRecipes/{feedstock}-feedsto
 package_filter = { allowed_names = ["r", "rpy2", "rstudio"], allowed_prefixes = ["r-", "_r-", "mro-"] }
 dashboards = ["anaconda"]
 metadata_retrieval = "streamed"
-override_extensions = [".conda"]
+override_extensions = ["conda"]
 
 # pkgs/msys2 does not seem to offer .conda artifacts; leave out for now
 # [channels."pkgs/msys2"]
 # package_filter = { allowed_prefixes = ["m2-", "m2w64-", "msys2-"] }
 # dashboards = ["anaconda"]
-# override_extensions = [".conda"]
+# override_extensions = ["conda"]
 
 [dashboards]
 anaconda = { url_pattern = "https://anaconda.org/{channel}/{name}/files?version={version}" }
diff --git a/conda_metadata_app/app_config.py b/conda_metadata_app/app_config.py
index 689ae36..8c9c32a 100644
--- a/conda_metadata_app/app_config.py
+++ b/conda_metadata_app/app_config.py
@@ -234,7 +234,7 @@ def check_supports_broken_label_artifact_discovery(self) -> Self:
     How to retrieve metadata for a package.
     """
 
-    override_extensions: list[Literal[".conda"] | Literal[".tar.bz2"]] | None = None
+    override_extensions: list[Literal["conda"] | Literal["tar.bz2"]] | None = None
     """
     Set this to a list of conda package extensions to override the auto detection of extensions.
     """
diff --git a/pixi.toml b/pixi.toml
index 85e4cbe..cd0013b 100644
--- a/pixi.toml
+++ b/pixi.toml
@@ -7,8 +7,8 @@ channels = ["conda-forge"]
 platforms = ["linux-64", "win-64", "osx-arm64", "osx-64", "linux-aarch64"]
 
 [tasks]
-dev = "streamlit run --server.runOnSave=true app.py"
-deploy = "streamlit run --server.headless=true --global.developmentMode=false app.py"
+dev = "python -m streamlit run --server.runOnSave=true app.py"
+deploy = "python -m streamlit run --server.headless=true --global.developmentMode=false app.py"
 schema = "python -m conda_metadata_app.app_config"
 postinstall-production = "pip install --no-deps --disable-pip-version-check dist/conda_metadata_app-*.whl"