diff --git a/src/cli/cpl.project.json b/src/cli/cpl.project.json
index 57786277..76a94d70 100644
--- a/src/cli/cpl.project.json
+++ b/src/cli/cpl.project.json
@@ -17,7 +17,6 @@
   "main": "cpl/cli/main.py",
   "directory": "cpl",
   "build": {
-    "build": "python -m build",
     "include": [
       "_templates/"
     ],
diff --git a/src/cli/cpl/cli/command/package/install.py b/src/cli/cpl/cli/command/package/install.py
index d2bb4aa2..fd1bb93f 100644
--- a/src/cli/cpl/cli/command/package/install.py
+++ b/src/cli/cpl/cli/command/package/install.py
@@ -19,7 +19,12 @@ def install(package: str, project: str, dev: bool, verbose: bool):
     if package is not None:
         Console.write_line(f"Installing {package} to '{project.name}':")
         try:
-            Pip.command("install", package, verbose=verbose, path=project.path)
+            Pip.command(
+                "install --extra-index-url https://git.sh-edraft.de/api/packages/sh-edraft.de/pypi/simple/",
+                package,
+                verbose=verbose,
+                path=project.path,
+            )
         except subprocess.CalledProcessError as e:
             Console.error(f"Failed to install {package}: exit code {e.returncode}")
             return
@@ -51,6 +56,11 @@ def install(package: str, project: str, dev: bool, verbose: bool):
         dep = Pip.normalize_dep(name, version)
         Console.write_line(f"  -> {dep}")
         try:
-            Pip.command("install", dep, verbose=verbose, path=project.path)
+            Pip.command(
+                "install --extra-index-url https://git.sh-edraft.de/api/packages/sh-edraft.de/pypi/simple/",
+                dep,
+                verbose=verbose,
+                path=project.path,
+            )
         except subprocess.CalledProcessError as e:
             Console.error(f"Failed to install {dep}: exit code {e.returncode}")
diff --git a/src/cli/cpl/cli/command/package/uninstall.py b/src/cli/cpl/cli/command/package/uninstall.py
index ef1b5b7e..f856b41a 100644
--- a/src/cli/cpl/cli/command/package/uninstall.py
+++ b/src/cli/cpl/cli/command/package/uninstall.py
@@ -22,7 +22,12 @@ def uninstall(package: str, project: str, dev: bool, verbose: bool):
     deps = project.dependencies if not dev else project.dev_dependencies
 
     try:
-        Pip.command("uninstall -y", package, verbose=verbose, path=project.path)
+        Pip.command(
+            "uninstall -y",
+            package,
+            verbose=verbose,
+            path=project.path,
+        )
     except subprocess.CalledProcessError as e:
         Console.error(f"Failed to uninstall {package}: exit code {e.returncode}")
         return
diff --git a/src/cli/cpl/cli/command/package/update.py b/src/cli/cpl/cli/command/package/update.py
index fed28888..ea602dc1 100644
--- a/src/cli/cpl/cli/command/package/update.py
+++ b/src/cli/cpl/cli/command/package/update.py
@@ -30,7 +30,7 @@ def update(package: str, project: str, dev: bool, verbose: bool):
         Console.write_line(f"Updating {package} to '{project.name}':")
         try:
             Pip.command(
-                "install --upgrade",
+                "install --upgrade --extra-index-url https://git.sh-edraft.de/api/packages/sh-edraft.de/pypi/simple/",
                 f"{Pip.normalize_dep(package, old_spec)}",
                 verbose=verbose,
                 path=project.path,
diff --git a/src/cli/cpl/cli/utils/pip.py b/src/cli/cpl/cli/utils/pip.py
index 70fbf343..8d9c0798 100644
--- a/src/cli/cpl/cli/utils/pip.py
+++ b/src/cli/cpl/cli/utils/pip.py
@@ -109,7 +109,7 @@ class Pip:
             Console.write_line(f"Running: {pip} {command} {''.join(args)}")
 
         subprocess.run(
-            [*pip.split(), command, *args],
+            [*pip.split(), *command.split(), *args],
             check=True,
             stdin=subprocess.DEVNULL if not verbose else None,
             stdout=subprocess.DEVNULL if not verbose else None,