diff --git a/system/base/pisi/actions.py b/system/base/pisi/actions.py
index 50aeff92..e69d74bb 100644
--- a/system/base/pisi/actions.py
+++ b/system/base/pisi/actions.py
@@ -9,8 +9,8 @@ from pisi.actionsapi import shelltools
 from pisi.actionsapi import pythonmodules
 
 def build():
-    pisitools.dosed("pisi/__init__.py", "2.4", "2.6")
-    pisitools.dosed("pisi/db/lazydb.py", "2.4", "2.6")
+    pisitools.dosed("pisi/__init__.py", "2.4", "2.6.1")
+    pisitools.dosed("pisi/db/lazydb.py", "2.4", "2.6.1")
     pythonmodules.compile()
 
 def install():
diff --git a/system/base/pisi/files/kernel-5.4-kerneltools-headers.patch b/system/base/pisi/files/kernel-5.4-kerneltools-headers.patch
new file mode 100644
index 00000000..69b2d443
--- /dev/null
+++ b/system/base/pisi/files/kernel-5.4-kerneltools-headers.patch
@@ -0,0 +1,14 @@
+diff -Nuar a/pisi/actionsapi/kerneltools.py b/pisi/actionsapi/kerneltools.py
+--- a/pisi/actionsapi/kerneltools.py	2014-03-08 00:03:46.000000000 +0200
++++ b/pisi/actionsapi/kerneltools.py	2020-01-05 19:42:38.461427561 +0300
+@@ -268,7 +268,9 @@
+     #######################Workaround ends here ...
+     
+     # make defconfig and install the headers
+-    autotools.make("%s defconfig" % make_cmd)
++    #autotools.make("%s defconfig" % make_cmd)
++    #kernel-5.4
++    autotools.make("%s mrproper" % make_cmd)
+     autotools.rawInstall(make_cmd, "headers_install")
+ 
+     oldwd = os.getcwd()
diff --git a/system/base/pisi/files/mesontools.py b/system/base/pisi/files/mesontools.py
new file mode 100644
index 00000000..9bada612
--- /dev/null
+++ b/system/base/pisi/files/mesontools.py
@@ -0,0 +1,99 @@
+# -*- coding: utf-8 -*-
+import gettext
+
+import pisi.actionsapi
+import pisi.context as ctx
+from pisi.actionsapi import get
+from pisi.actionsapi.shelltools import system
+
+__trans = gettext.translation('pisi', fallback=True)
+_ = __trans.ugettext
+
+
+class ConfigureError(pisi.actionsapi.Error):
+    def __init__(self, value=''):
+        pisi.actionsapi.Error.__init__(self, value)
+        self.value = value
+        ctx.ui.error(value)
+
+
+class CompileError(pisi.actionsapi.Error):
+    def __init__(self, value=''):
+        pisi.actionsapi.Error.__init__(self, value)
+        self.value = value
+        ctx.ui.error(value)
+
+
+class InstallError(pisi.actionsapi.Error):
+    def __init__(self, value=''):
+        pisi.actionsapi.Error.__init__(self, value)
+        self.value = value
+        ctx.ui.error(value)
+
+
+def configure(parameters='', build_dir='build'):
+    """
+    Configures the project into the build directory with the parameters using meson.
+
+    Args:
+        parameters (str): Extra parameters for the command. Default is empty string.
+        build_dir (str): Build directory. Default is 'build'.
+
+    Examples:
+        >>> mesontools.configure()
+        >>> mesontools.configure('extra parameters')
+        >>> mesontools.configure('extra parameters', 'custom_build_dir')
+    """
+    default_parameters = ' '.join([
+        '--prefix=/%s' % get.defaultprefixDIR(),
+        '--bindir=/usr/bin',
+        '--datadir=/%s' % get.dataDIR(),
+        '--includedir=/usr/include',
+        '--infodir=/%s' % get.infoDIR(),
+        '--libdir=/%s' % ('usr/lib32' if get.buildTYPE() == 'emul32' else 'usr/lib'),
+        '--libexecdir=/%s' % get.libexecDIR(),
+        '--localedir=/usr/share/locale',
+        '--localstatedir=/%s' % get.localstateDIR(),
+        '--mandir=/%s' % get.manDIR(),
+        '--sbindir=/%s' % get.sbinDIR(),
+        '--sharedstatedir=com',
+        '--sysconfdir=/etc',
+        '--default-library=shared',
+    ])
+    if system('meson setup %s %s %s' % (default_parameters, parameters, build_dir)):
+        raise ConfigureError(_('Configuration failed.'))
+
+
+def build(parameters='', build_dir='build'):
+    """
+    Builds the project into the build directory with the parameters using ninja. Instead of letting ninja
+    to detect number of cores, this function gets the number from PISI configurations.
+
+    Args:
+        parameters (str): Extra parameters for the command. Default is empty string.
+        build_dir (str): Build directory. Default is 'build'.
+
+    Examples:
+        >>> mesontools.build()
+        >>> mesontools.build('extra parameters')
+        >>> mesontools.build('extra parameters', 'custom_build_dir')
+    """
+    if system('ninja -C %s %s %s' % (build_dir, parameters, get.makeJOBS())):
+        raise CompileError(_('Make failed.'))
+
+
+def install(parameters='', build_dir='build'):
+    """
+    Installs the project to the destination directory.
+
+    Args:
+        parameters (str): Extra parameters for the command. Default is empty string.
+        build_dir (str): Build directory. Default is 'build'.
+
+    Examples:
+        >>> mesontools.install()
+        >>> mesontools.install('extra parameters')
+        >>> mesontools.install('extra parameters', 'custom_build_dir')
+    """
+    if system('DESTDIR=%s ninja -C %s %s install' % (get.installDIR(), build_dir, parameters, )):
+        raise InstallError(_('Install failed.'))
diff --git a/system/base/pisi/pspec.xml b/system/base/pisi/pspec.xml
index b4abc8fa..ad71351a 100644
--- a/system/base/pisi/pspec.xml
+++ b/system/base/pisi/pspec.xml
@@ -36,6 +36,7 @@
             <Patch>emergeup.patch</Patch>
             <Patch>fetch.patch</Patch>
             <Patch>kerneltools_extra_headers_moved.patch</Patch>
+            <Patch>kernel-5.4-kerneltools-headers.patch</Patch>
         </Patches>
     </Source>
 
@@ -80,6 +81,7 @@
             <AdditionalFile target="/usr/lib/tmpfiles.d/pisi.conf" permission="0644" owner="root">tmpfiles.conf</AdditionalFile>
             <AdditionalFile owner="root" permission="0644" target="/usr/lib/pisilinux/pisi/actionsapi/qt5.py">qt5.py</AdditionalFile>
             <AdditionalFile owner="root" permission="0644" target="/usr/lib/pisilinux/pisi/actionsapi/kde5.py">kde5.py</AdditionalFile>
+            <AdditionalFile owner="root" permission="0644" target="/usr/lib/pisilinux/pisi/actionsapi/mesontools.py">mesontools.py</AdditionalFile>
         </AdditionalFiles>
         <Provides>
             <COMAR script="package.py">System.Package</COMAR>
@@ -88,6 +90,13 @@
     </Package>
 
     <History>
+        <Update release="11">
+            <Date>2020-01-05</Date>
+            <Version>2.6.1</Version>
+            <Comment>add parameters</Comment>
+            <Name>PisiLinux Community</Name>
+            <Email>admin@pisilinux.org</Email>
+        </Update>
 		<Update release="10">
             <Date>2019-12-27</Date>
             <Version>2.6</Version>