diff --git a/Vagrantfile b/Vagrantfile
index a1d1cccb6..bd84710c7 100644
--- a/Vagrantfile
+++ b/Vagrantfile
@@ -71,6 +71,7 @@ end
 
 def packages_openbsd
   return <<-EOF
+    echo "https://ftp.eu.openbsd.org/pub/OpenBSD" > /etc/installurl
     pkg_add bash
     chsh -s bash vagrant
     pkg_add xxhash
@@ -166,10 +167,7 @@ end
 def install_pythons(boxname)
   return <<-EOF
     . ~/.bash_profile
-    pyenv install 3.12.0  # tests
     pyenv install 3.11.11  # tests, binary build
-    pyenv install 3.10.2  # tests
-    pyenv install 3.9.4  # tests
     pyenv rehash
   EOF
 end
@@ -234,8 +232,8 @@ def run_tests(boxname, skip_env)
     . ../borg-env/bin/activate
     if which pyenv 2> /dev/null; then
       # for testing, use the earliest point releases of the supported python versions:
-      pyenv global 3.9.4 3.10.2 3.11.11 3.12.0
-      pyenv local 3.9.4 3.10.2 3.11.11 3.12.0
+      pyenv global 3.11.11
+      pyenv local 3.11.11
     fi
     # otherwise: just use the system python
     # avoid that git complains about dubious ownership if we use fakeroot:
diff --git a/requirements.d/development.lock.txt b/requirements.d/development.lock.txt
index 1272873ce..e7c1a3f01 100644
--- a/requirements.d/development.lock.txt
+++ b/requirements.d/development.lock.txt
@@ -9,4 +9,4 @@ pytest==7.4.3
 pytest-xdist==3.5.0
 pytest-cov==4.1.0
 pytest-benchmark==4.0.0
-Cython==3.0.10
+Cython==3.0.11
diff --git a/src/borg/logger.py b/src/borg/logger.py
index 8641f52f2..8c23d392d 100644
--- a/src/borg/logger.py
+++ b/src/borg/logger.py
@@ -44,6 +44,12 @@
 # warnings.filterwarnings('ignore', r'... regex for warning message to ignore ...')
 
 
+# we do not want that urllib spoils test output with LibreSSL related warnings on OpenBSD.
+# NotOpenSSLWarning: urllib3 v2 only supports OpenSSL 1.1.1+,
+#                    currently the 'ssl' module is compiled with 'LibreSSL 3.8.2'.
+warnings.filterwarnings("ignore", message=r".*urllib3 v2 only supports OpenSSL.*")
+
+
 def _log_warning(message, category, filename, lineno, file=None, line=None):
     # for warnings, we just want to use the logging system, not stderr or other files
     msg = f"{filename}:{lineno}: {category.__name__}: {message}"