diff --git a/Client/src/bkr/client/__init__.py b/Client/src/bkr/client/__init__.py
index 29efc5da6..b7ca89859 100644
--- a/Client/src/bkr/client/__init__.py
+++ b/Client/src/bkr/client/__init__.py
@@ -61,7 +61,7 @@ def host_filter_presets():
     for f in config_files:
         with open(f) as fobj:
             for line in fobj:
-                matched = re.match('^(\w+)\s+(\S+.*)$', line)
+                matched = re.match(r'^(\w+)\s+(\S+.*)$', line)
                 if matched:
                     preset, xml = matched.groups()
                     _host_filter_presets[preset] = xml
diff --git a/Client/src/bkr/client/commands/cmd_workflow_xslt.py b/Client/src/bkr/client/commands/cmd_workflow_xslt.py
index 9ea230252..8d599b85b 100644
--- a/Client/src/bkr/client/commands/cmd_workflow_xslt.py
+++ b/Client/src/bkr/client/commands/cmd_workflow_xslt.py
@@ -35,7 +35,7 @@ def __init__(self):
         self.arguments = {}
         self.current = None
         self.current_node = None
-        self.re_tag = re.compile('(.*)(\[@(.*)=(.*)\])')
+        self.re_tag = re.compile(r'(.*)(\[@(.*)=(.*)\])')
 
     def add_argument(self, name, argtype, tagname, tagvaltype, tagvalname,
                      tagnamelmnt, value, optional):
diff --git a/Client/src/bkr/client/tests/test_wizard.py b/Client/src/bkr/client/tests/test_wizard.py
index 3c541fe8b..ffdac2693 100644
--- a/Client/src/bkr/client/tests/test_wizard.py
+++ b/Client/src/bkr/client/tests/test_wizard.py
@@ -125,7 +125,7 @@ def test_shell_metachars_escaped_in_makefile(self):
         desc = wizard.Desc(options, suggest="Test for BZ#1234567 "
                                             "(I ran `rm -rf ~` and everything's gone suddenly)")
         self.assertEqual(
-            """\n            \t@echo "Description:     Test for BZ#1234567 (I ran \`rm -rf ~\` and everything's gone suddenly)" >> $(METADATA)""",
+            """\n            \t@echo "Description:     Test for BZ#1234567 (I ran \\`rm -rf ~\\` and everything's gone suddenly)" >> $(METADATA)""",
             desc.formatMakefileLine())
 
 
diff --git a/Client/src/bkr/client/wizard.py b/Client/src/bkr/client/wizard.py
index 01ad8c987..a91f61746 100755
--- a/Client/src/bkr/client/wizard.py
+++ b/Client/src/bkr/client/wizard.py
@@ -364,24 +364,24 @@
 WizardVersion = "2.3.2"
 
 # Regular expressions
-RegExpPackage    = re.compile("^(?![._+-])[.a-zA-Z0-9_+-]+(?<![._-])$")
-RegExpRhtsRequires = re.compile("^(?![._+-])[.a-zA-Z0-9_+-/()]+(?<![._-])$")
-RegExpPath       = re.compile("^(?![/-])[a-zA-Z0-9/_-]+(?<![/-])$")
-RegExpTestName   = re.compile("^(?!-)[a-zA-Z0-9-_]+(?<!-)$")
-RegExpReleases   = re.compile("^(?!-)[a-zA-Z0-9-_]+(?<!-)$")
-RegExpBug        = re.compile("^\d+$")
-RegExpBugLong    = re.compile("^bz\d+$")
-RegExpBugPrefix  = re.compile("^bz")
-RegExpCVE        = re.compile("^\d{4}-\d{4,}$")
-RegExpCVELong    = re.compile("^CVE-\d{4}-\d{4}$")
-RegExpCVEPrefix  = re.compile("^CVE-")
-RegExpEmail      = re.compile("^[a-z._-]+@[a-z.-]+$")
-RegExpYes        = re.compile("Everything OK|y|ye|jo|ju|ja|ano|da", re.I)
-RegExpReproducer = re.compile("repr|test|expl|poc|demo", re.I)
-RegExpScript     = re.compile("\.(sh|py|pl)$")
-RegExpMetadata   = re.compile("(\$\(METADATA\):\s+Makefile.*)$", re.S)
-RegExpTest       = re.compile("TEST=(\S+)", re.S)
-RegExpVersion    = re.compile("TESTVERSION=([\d.]+)", re.S)
+RegExpPackage    = re.compile(r"^(?![._+-])[.a-zA-Z0-9_+-]+(?<![._-])$")
+RegExpRhtsRequires = re.compile(r"^(?![._+-])[.a-zA-Z0-9_+-/()]+(?<![._-])$")
+RegExpPath       = re.compile(r"^(?![/-])[a-zA-Z0-9/_-]+(?<![/-])$")
+RegExpTestName   = re.compile(r"^(?!-)[a-zA-Z0-9-_]+(?<!-)$")
+RegExpReleases   = re.compile(r"^(?!-)[a-zA-Z0-9-_]+(?<!-)$")
+RegExpBug        = re.compile(r"^\d+$")
+RegExpBugLong    = re.compile(r"^bz\d+$")
+RegExpBugPrefix  = re.compile(r"^bz")
+RegExpCVE        = re.compile(r"^\d{4}-\d{4,}$")
+RegExpCVELong    = re.compile(r"^CVE-\d{4}-\d{4}$")
+RegExpCVEPrefix  = re.compile(r"^CVE-")
+RegExpEmail      = re.compile(r"^[a-z._-]+@[a-z.-]+$")
+RegExpYes        = re.compile(r"Everything OK|y|ye|jo|ju|ja|ano|da", re.I)
+RegExpReproducer = re.compile(r"repr|test|expl|poc|demo", re.I)
+RegExpScript     = re.compile(r"\.(sh|py|pl)$")
+RegExpMetadata   = re.compile(r"(\$\(METADATA\):\s+Makefile.*)$", re.S)
+RegExpTest       = re.compile(r"TEST=(\S+)", re.S)
+RegExpVersion    = re.compile(r"TESTVERSION=([\d.]+)", re.S)
 
 # Suggested test types (these used to be enforced)
 SuggestedTestTypes = """Regression Performance Stress Certification
@@ -401,7 +401,7 @@
 except AttributeError:
     GuessAuthorName = pwd_uinfo.pw_gecos
 
-GuessAuthorDomain = re.sub("^.*\.([^.]+\.[^.]+)$", "\\1", os.uname()[1])
+GuessAuthorDomain = re.sub(r"^.*\.([^.]+\.[^.]+)$", "\\1", os.uname()[1])
 GuessAuthorEmail = "%s@%s" % (GuessAuthorLogin, GuessAuthorDomain)
 
 # Make sure guesses are valid values
@@ -468,7 +468,7 @@
 
 def wrapText(text):
     """ Wrapt text to fit default width """
-    text = re.compile("\s+").sub(" ", text)
+    text = re.compile(r"\s+").sub(" ", text)
     return "\n".join(textwrap.wrap(text))
 
 def dedentText(text, count = 12):
@@ -533,7 +533,7 @@ def comment(text, width=70, comment="#", top=True, bottom=True, padding=3):
         result += "\n" + hr(width)
 
     # remove any trailing spaces
-    result = re.compile("\s+$", re.M).sub("", result)
+    result = re.compile(r"\s+$", re.M).sub("", result)
     return result
 
 def dashifyText(text, allowExtraChars = ""):
@@ -744,7 +744,7 @@ def getSkeleton(self): return getNode(self.skeleton)
     def getLicenseContent(self, license):
         content = findNode(self.licenses, "license", license)
         if content:
-            return re.sub("\n\s+$", "", content.firstChild.nodeValue)
+            return re.sub(r"\n\s+$", "", content.firstChild.nodeValue)
         else:
             return None
 
@@ -808,8 +808,8 @@ def __init__(self, options):
 
             # substitute the old style $TEST sub-variables if present
             for var in "TOPLEVEL_NAMESPACE PACKAGE_NAME RELATIVE_PATH".split():
-                m = re.search("%s=(\S+)" % var, self.text)
-                if m: self.text = re.sub("\$\(%s\)" % var, m.group(1), self.text)
+                m = re.search(r"%s=(\S+)" % var, self.text)
+                if m: self.text = re.sub(r"\$\(%s\)" % var, m.group(1), self.text)
 
             # locate the metadata section
             print("Inspecting the metadata section...")
@@ -845,7 +845,7 @@ def __init__(self, options):
         # parse info from metadata line by line
         print("Parsing the individual metadata...")
         for line in self.metadata.split("\n"):
-            m = re.search("echo\s+[\"'](\w+):\s*(.*)[\"']", line)
+            m = re.search(r"echo\s+[\"'](\w+):\s*(.*)[\"']", line)
             # skip non-@echo lines
             if not m: continue
             # read the key & value pair
@@ -872,7 +872,7 @@ def __init__(self, options):
                 self.unknown += "\n" + line
 
         # parse name & email
-        m = re.search("(.*)\s+<(.*)>", options.opt.owner)
+        m = re.search(r"(.*)\s+<(.*)>", options.opt.owner)
         if m:
             options.opt.author = m.group(1)
             options.opt.email = m.group(2)
@@ -1237,9 +1237,9 @@ def defaultify(self):
     def normalize(self):
         """ Remove trailing and double spaces """
         if not self.data: return
-        self.data = re.sub("^\s*", "", self.data)
-        self.data = re.sub("\s*$", "", self.data)
-        self.data = re.sub("\s+", " ", self.data)
+        self.data = re.sub(r"^\s*", "", self.data)
+        self.data = re.sub(r"\s*$", "", self.data)
+        self.data = re.sub(r"\s+", " ", self.data)
 
     def read(self):
         """
@@ -1259,7 +1259,7 @@ def read(self):
         if answer != "":
             # append the data if the answer starts with a "+",
             # but ignore if only "+" is present
-            m = re.search("^\+\S+(.*)", answer)
+            m = re.search(r"^\+\S+(.*)", answer)
             if m and isinstance(self.data, list):
                 self.data.append(m.group(1))
             else:
@@ -1289,7 +1289,7 @@ def singleName(self):
     def matchName(self, text):
         """ Return true if the text matches inquisitor's name """
         # remove any special characters from the search string
-        text = re.sub("[^\w\s]", "", text)
+        text = re.sub(r"[^\w\s]", "", text)
         return re.search(text, self.name, re.I)
 
     def describe(self):
@@ -1649,7 +1649,7 @@ def init(self):
         self.default(self.options.time())
 
     def valid(self):
-        m = re.match("^(\d{1,2})[mhd]$", self.data)
+        m = re.match(r"^(\d{1,2})[mhd]$", self.data)
         return m is not None and int(m.group(1)) > 0
 
 
@@ -1664,7 +1664,7 @@ def init(self):
         self.default(self.options.version())
 
     def valid(self):
-        return re.match("^\d+\.\d+$", self.data)
+        return re.match(r"^\d+\.\d+$", self.data)
 
 
 class Priority(SingleChoice):
@@ -1965,7 +1965,7 @@ def fetchBugDetails(self):
     def getSummary(self):
         """ Return short summary fetched from bugzilla """
         if self.bug:
-            return re.sub("CVE-\d{4}-\d{4}\s*", "", removeEmbargo(self.bug.summary))
+            return re.sub(r"CVE-\d{4}-\d{4}\s*", "", removeEmbargo(self.bug.summary))
 
     def getComponent(self):
         """ Return bug component fetched from bugzilla """
@@ -2256,7 +2256,7 @@ def init(self):
             rlJournalStart
                 rlPhaseStartSetup
                     rlAssertRpm $PACKAGE
-                    rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+                    rlRun "TmpDir=\\$(mktemp -d)" 0 "Creating tmp directory"
                     rlRun "pushd $TmpDir"
                 rlPhaseEnd
 
@@ -2283,7 +2283,7 @@ def init(self):
             rlJournalStart
                 rlPhaseStartSetup
                     rlAssertRpm $PACKAGE || rlDie "$PACKAGE not installed"
-                    rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+                    rlRun "TmpDir=\\$(mktemp -d)" 0 "Creating tmp directory"
                     rlRun "pushd $TmpDir"
                 rlPhaseEnd
 
@@ -2373,7 +2373,7 @@ def init(self):
                     rlAssertRpm $PACKAGE
                     rlLog "Server: $SERVERS"
                     rlLog "Client: $CLIENTS"
-                    rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+                    rlRun "TmpDir=\\$(mktemp -d)" 0 "Creating tmp directory"
                     rlRun "pushd $TmpDir"
                 rlPhaseEnd
 
@@ -2409,7 +2409,7 @@ def init(self):
             rlJournalStart
                 rlPhaseStartSetup
                     rlRun "rlImport <package/>/<testname/>"
-                    rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+                    rlRun "TmpDir=\\$(mktemp -d)" 0 "Creating tmp directory"
                     rlRun "pushd $TmpDir"
                 rlPhaseEnd
 
@@ -2456,7 +2456,7 @@ def init(self):
             rlJournalStart
                 rlPhaseStartSetup
                     rlAssertRpm --all
-                    rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+                    rlRun "TmpDir=\\$(mktemp -d)" 0 "Creating tmp directory"
                     rlRun "pushd $TmpDir"
                 rlPhaseEnd
 
@@ -2716,7 +2716,7 @@ def getRuntest(self, test = None):
         # substitute variables, convert to plain text
         skeleton = self.replaceVariables(skeleton, test)
         # return dedented skeleton without trailing whitespace
-        skeleton = re.sub("\n\s+$", "\n", skeleton)
+        skeleton = re.sub(r"\n\s+$", "\n", skeleton)
         return dedentText(skeleton)
 
     def getRhtsRequires(self):
diff --git a/IntegrationTests/src/bkr/inttest/client/test_update_inventory.py b/IntegrationTests/src/bkr/inttest/client/test_update_inventory.py
index 6c56deb55..2019bf736 100644
--- a/IntegrationTests/src/bkr/inttest/client/test_update_inventory.py
+++ b/IntegrationTests/src/bkr/inttest/client/test_update_inventory.py
@@ -69,7 +69,7 @@ def test_update_inventory_wait(self):
         proc = start_client(args)
         out = proc.stdout.readline().rstrip()
         self.assert_(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         out = proc.stdout.readline().rstrip()
         self.assert_('Watching tasks (this may be safely interrupted)...' == out)
diff --git a/IntegrationTests/src/bkr/inttest/client/test_watchdogs_show.py b/IntegrationTests/src/bkr/inttest/client/test_watchdogs_show.py
index f8fee0997..70165c3d7 100644
--- a/IntegrationTests/src/bkr/inttest/client/test_watchdogs_show.py
+++ b/IntegrationTests/src/bkr/inttest/client/test_watchdogs_show.py
@@ -24,7 +24,7 @@ def test_watchdog_show_running_task(self):
                 datetime.timedelta(seconds=99)
         out = run_client(['bkr', 'watchdog-show', str(t1.id)])
         # Let's just check it is somewhere between 10-99
-        self.assertTrue(re.match('%s: \d\d\\n' % t1.id, out))
+        self.assertTrue(re.match(r'%s: \d\d\n' % t1.id, out))
 
     def test_watchdog_show_non_running_task(self):
         with session.begin():
diff --git a/IntegrationTests/src/bkr/inttest/client/test_workflow_simple.py b/IntegrationTests/src/bkr/inttest/client/test_workflow_simple.py
index 1ceacb138..0e98bad2f 100644
--- a/IntegrationTests/src/bkr/inttest/client/test_workflow_simple.py
+++ b/IntegrationTests/src/bkr/inttest/client/test_workflow_simple.py
@@ -65,7 +65,7 @@ def test_job_group(self):
                           '--job-group', group.group_name,
                           '--task', self.task.name], config=config1)
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -98,7 +98,7 @@ def test_job_owner(self):
                           '--family', self.distro.osversion.osmajor.osmajor,
                           '--task', self.task.name], config=config)
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -120,7 +120,7 @@ def test_submit_job_wait(self):
         proc = start_client(args)
         out = proc.stdout.readline().rstrip()
         self.assert_(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
 
         out = proc.stdout.readline().rstrip()
@@ -334,7 +334,7 @@ def test_servers_default_zero(self):
                           '--task', '/distribution/reservesys',
                           '--clients', '2'])
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -349,7 +349,7 @@ def test_clients_default_zero(self):
                           '--task', '/distribution/reservesys',
                           '--servers', '2'])
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -362,7 +362,7 @@ def submit_job_and_check_arches(self, workflow_options, expected_arches):
         out = run_client(['bkr', 'workflow-simple', '--task', self.task.name]
                          + workflow_options)
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -435,7 +435,7 @@ def test_kickstart_template(self):
                           '--task', self.task.name,
                           '--kickstart', template_file.name])
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -456,7 +456,7 @@ def test_kickstart_template_with_kernel_options(self):
                           '--task', self.task.name,
                           '--kickstart', template_file.name])
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -484,7 +484,7 @@ def test_no_default_install_method(self):
         out = run_client(['bkr', 'workflow-simple', '--distro', self.distro.name,
                           '--task', self.task.name])
         self.assertTrue(out.startswith('Submitted:'), out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)
@@ -557,7 +557,7 @@ def _verify_check_install(self, distro):
                           '--distro', distro.name,
                           '--task', self.task.name])
         self.assertIn('Submitted:', out)
-        m = re.search('J:(\d+)', out)
+        m = re.search(r'J:(\d+)', out)
         job_id = m.group(1)
         with session.begin():
             job = Job.by_id(job_id)