diff --git a/conf/requirements.pip b/conf/requirements.pip
index fc8f15ea6ee25def0dc0a246c79a347907ad6210..bac2a760ba329ca7fd649220d55e071230c92697 100644
--- a/conf/requirements.pip
+++ b/conf/requirements.pip
@@ -27,7 +27,7 @@ requests==2.23.0
 rrdtool==0.1.15
 pyyaml==5.3.1
 pydgets==0.9
-pyzenkit==0.59
+pyzenkit==0.61
 pynspect==0.17
 ipranges==0.1.10
 typedcols==0.1.13
diff --git a/lib/mentat/__init__.py b/lib/mentat/__init__.py
index bcc8f978baf26ee53059fe123a01ad8f53ea00bc..ac8b741ef79f641e354fbc64c5cd4aa1e4a9c978 100644
--- a/lib/mentat/__init__.py
+++ b/lib/mentat/__init__.py
@@ -20,4 +20,4 @@ open-source project.
 
 __author__  = "Jan Mach <jan.mach@cesnet.cz>"
 __credits__ = "Pavel Kácha <pavel.kacha@cesnet.cz>, Andrea Kropáčová <andrea.kropacova@cesnet.cz>"
-__version__ = "2.8.112"
+__version__ = "2.8.113"
diff --git a/lib/mentat/system.py b/lib/mentat/system.py
index 90e2ae79cdaeb60241f90135017b3cbd438915e1..cf54768e876e10b95be60b8d2c50d5b930167fa5 100644
--- a/lib/mentat/system.py
+++ b/lib/mentat/system.py
@@ -85,13 +85,13 @@ OVERALL_STATUS_MESSAGES = {
 
 REGEXP_MENTAT_PS     = re.compile(r'\s*(\d+)\s+([^\s]+)\s+([^\s]*(?:python(?:\d+(?:\.\d+)?)?))\s+[^\s]+(mentat-[^\s]+)(?:\s+(.*))?')
 """Regular expression for selecting Mentat related processes."""
-REGEXP_MENTAT_PIDF   = re.compile(r'(.+?)(?:\.(\d+))?\.pid$')
+REGEXP_MENTAT_PIDF   = re.compile(r'(.+?)(?:\.([0-9a-fA-F]+))?\.pid$')
 """Regular expression for selecting Mentat related PID files."""
 REGEXP_MENTAT_CRONF  = re.compile(r'(.+)\.cron$')
 """Regular expression for selecting Mentat related log files."""
 REGEXP_MENTAT_LOGF   = re.compile(r'(.+)\.log$')
 """Regular expression for selecting Mentat related log files."""
-REGEXP_MENTAT_RLOGF  = re.compile(r'(.+)(?:\.(\d+))?\.runlog$')
+REGEXP_MENTAT_RLOGF  = re.compile(r'(.+)(?:\.([0-9a-fA-F]+))?\.runlog$')
 """Regular expression for selecting Mentat related runlog files."""
 REGEXP_MENTAT_CACHEF = re.compile(r'(.+)\.json$')
 """Regular expression for selecting Mentat related cache files."""
diff --git a/vagrantenv/provisioning/p02_mentat.sh b/vagrantenv/provisioning/p02_mentat.sh
index 9406af9d5057cf7b07ebdf640295f126eca717ae..1fa0eb5715b03ee16e04451eae9bea55a881ce33 100644
--- a/vagrantenv/provisioning/p02_mentat.sh
+++ b/vagrantenv/provisioning/p02_mentat.sh
@@ -73,6 +73,7 @@ ensure_link /vagrant/conf /etc/mentat
 print_subtitle 'Preparing Python virtual environment'
 /etc/mentat/scripts/init-venv.sh
 source ${MENTAT_VENV}/bin/activate
+chown -R vagrant:vagrant /var/mentat/venv
 
 print_subtitle 'Preparing application runtime environment'
 /etc/mentat/scripts/init-runenv.sh