diff --git a/senza/subcommands/root.py b/senza/subcommands/root.py
index a121009..e163658 100644
--- a/senza/subcommands/root.py
+++ b/senza/subcommands/root.py
@@ -99,9 +99,9 @@ def check_senza_version(current_version: str):
     if latest_version is not None and current_version < latest_version:
         if __file__.startswith('/home'):
             # if it's installed in the user folder
-            cmd = "pip install --upgrade stups-senza"
+            cmd = "pip3 install --upgrade stups-senza"
         else:
-            cmd = "sudo pip install --upgrade stups-senza"
+            cmd = "sudo pip3 install --upgrade stups-senza"
         warning("Your senza version ({current}) is outdated. "
                 "Please install the new one using '{cmd}'".format(current=current_version,
                                                                   cmd=cmd))

Discrepancy between README and error messages
README.md states:
`sudo pip3 install --upgrade stups-senza`

But if you have an old version of senza installed, the reported message is:
`...Please install the new one using 'sudo pip install --upgrade stups-senza'`

Note that `pip3` is specified in README and `pip` is specified in the error message.

diff --git a/tests/test_subcommands/test_root.py b/tests/test_subcommands/test_root.py
index 86f5a4f..c16be12 100644
--- a/tests/test_subcommands/test_root.py
+++ b/tests/test_subcommands/test_root.py
@@ -71,7 +71,7 @@ def test_check_senza_version(monkeypatch,
         check_senza_version("0.40")
         mock_warning.assert_called_once_with(
             "Your senza version (0.40) is outdated. "
-            "Please install the new one using 'pip install --upgrade stups-senza'"
+            "Please install the new one using 'pip3 install --upgrade stups-senza'"
         )
 
     with TemporaryDirectory() as temp_dir_4:
@@ -83,7 +83,7 @@ def test_check_senza_version(monkeypatch,
         mock_warning.assert_called_once_with(
             "Your senza version (0.40) is outdated. "
             "Please install the new one using "
-            "'sudo pip install --upgrade stups-senza'"
+            "'sudo pip3 install --upgrade stups-senza'"
         )
 
 
@@ -115,7 +115,7 @@ def test_check_senza_version_outdated_cache(monkeypatch,  # noqa: F811
         mock_warning.assert_called_once_with(
             "Your senza version (0.40) is outdated. "
             "Please install the new one using "
-            "'sudo pip install --upgrade stups-senza'"
+            "'sudo pip3 install --upgrade stups-senza'"
         )
 
 

pip install -e .[dev]
parse_log_pytest
requirements.txt
pytest pytest-cov
apt-get update apt-get install -y gcc
3.9
requirements.txt
pytest --no-header -rA --tb=line --color=no -p no:cacheprovider -W ignore::DeprecationWarning
boto3==1.37.23
botocore==1.37.23
certifi==2025.1.31
charset-normalizer==3.4.1
click==8.1.8
clickclick==20.10.2
coverage==7.8.0
dnspython==1.15.0
dnspython3==1.15.0
exceptiongroup==1.2.2
idna==3.10
importlib_metadata==8.6.1
iniconfig==2.1.0
jmespath==1.0.1
packaging==24.2
pluggy==1.5.0
pystache==0.6.8
pytest==8.3.5
pytest-cov==6.0.0
python-dateutil==2.9.0.post0
PyYAML==6.0.2
raven==6.10.0
requests==2.32.3
s3transfer==0.11.4
six==1.17.0
stups-cli-support==1.1.22
stups-pierone==1.1.56
-e git+https://github.com/zalando-stups/senza.git@7d3726dec5badf48bab03bcee60eee43281b512c#egg=stups_senza
stups-tokens==1.1.19
stups-zign==1.2
tomli==2.2.1
typing==3.7.4.3
urllib3==1.26.20
zipp==3.21.0

name: senza
channels:
  - defaults
  - https://repo.anaconda.com/pkgs/main
  - https://repo.anaconda.com/pkgs/r
  - conda-forge
dependencies:
  - _libgcc_mutex=0.1=main
  - _openmp_mutex=5.1=1_gnu
  - ca-certificates=2025.2.25=h06a4308_0
  - ld_impl_linux-64=2.40=h12ee557_0
  - libffi=3.4.4=h6a678d5_1
  - libgcc-ng=11.2.0=h1234567_1
  - libgomp=11.2.0=h1234567_1
  - libstdcxx-ng=11.2.0=h1234567_1
  - ncurses=6.4=h6a678d5_0
  - openssl=3.0.16=h5eee18b_0
  - pip=25.0=py39h06a4308_0
  - python=3.9.21=he870216_1
  - readline=8.2=h5eee18b_0
  - setuptools=75.8.0=py39h06a4308_0
  - sqlite=3.45.3=h5eee18b_0
  - tk=8.6.14=h39e8969_0
  - tzdata=2025a=h04d1e81_0
  - wheel=0.45.1=py39h06a4308_0
  - xz=5.6.4=h5eee18b_1
  - zlib=1.2.13=h5eee18b_1
  - pip:
      - boto3==1.37.23
      - botocore==1.37.23
      - certifi==2025.1.31
      - charset-normalizer==3.4.1
      - click==8.1.8
      - clickclick==20.10.2
      - coverage==7.8.0
      - dnspython==1.15.0
      - dnspython3==1.15.0
      - exceptiongroup==1.2.2
      - idna==3.10
      - importlib-metadata==8.6.1
      - iniconfig==2.1.0
      - jmespath==1.0.1
      - packaging==24.2
      - pluggy==1.5.0
      - pystache==0.6.8
      - pytest==8.3.5
      - pytest-cov==6.0.0
      - python-dateutil==2.9.0.post0
      - pyyaml==6.0.2
      - raven==6.10.0
      - requests==2.32.3
      - s3transfer==0.11.4
      - six==1.17.0
      - stups-cli-support==1.1.22
      - stups-pierone==1.1.56
      - stups-tokens==1.1.19
      - stups-zign==1.2
      - tomli==2.2.1
      - typing==3.7.4.3
      - urllib3==1.26.20
      - zipp==3.21.0
prefix: /opt/conda/envs/senza

tests/test_subcommands/test_root.py::test_check_senza_version tests/test_subcommands/test_root.py::test_check_senza_version_outdated_cache
tests/test_subcommands/test_root.py::test_check_senza_version_notty tests/test_subcommands/test_root.py::test_check_senza_version_timeout tests/test_subcommands/test_root.py::test_check_senza_version_exception tests/test_subcommands/test_root.py::test_version
senza/subcommands/root.py
senza/subcommands/root.py