diff --git a/.travis.yml b/.travis.yml
index 708029f6a..2264e7db6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,8 +20,9 @@ matrix:
     - env: TOXENV=py35-qt5
     - env: TOXENV=py36-qt5
     - env: TOXENV=py37-qt5
+    - env: TOXENV=py38-qt5
     - env: TOXENV=py37-ps2
-    - env: TOXENV=py37-qt5-docs
+    - env: TOXENV=py38-qt5-docs
   allow_failures:
     #- env: TOXENV=flake8
     #- env: TOXENV=py27-qt4
@@ -54,7 +55,7 @@ script:
 
 after_success:
   # Deploy docs to taurus-org/taurus-doc
-  - if [[ "$TOXENV" == "py37-qt5-docs" && "$TRAVIS_REPO_SLUG" == "taurus-org/taurus" ]]; then
+  - if [[ "$TOXENV" == "py38-qt5-docs" && "$TRAVIS_REPO_SLUG" == "taurus-org/taurus" ]]; then
       pip install doctr ;
       touch build/sphinx/html/.nojekyll;
       if [[ "${TRAVIS_BRANCH}" == "develop" ]]; then
diff --git a/lib/taurus/qt/qtcore/configuration/configuration.py b/lib/taurus/qt/qtcore/configuration/configuration.py
index fef4ef51e..411185f77 100644
--- a/lib/taurus/qt/qtcore/configuration/configuration.py
+++ b/lib/taurus/qt/qtcore/configuration/configuration.py
@@ -444,11 +444,13 @@ def saveConfigFile(self, ofile=None):
             )
             if not ofile:
                 return
-        if isinstance(ofile, string_types):
-            ofile = open(ofile, 'wb')
-        configdict = self.createConfig(allowUnpickable=False)
         self.info("Saving current settings in '%s'" % ofile.name)
-        pickle.dump(configdict, ofile)
+        configdict = self.createConfig(allowUnpickable=False)
+        if isinstance(ofile, string_types):
+            with open(ofile, 'wb') as ofile:
+                pickle.dump(configdict, ofile)
+        else:
+            pickle.dump(configdict, ofile)
         return ofile.name
 
     def loadConfigFile(self, ifile=None):
@@ -466,8 +468,9 @@ def loadConfigFile(self, ifile=None):
             if not ifile:
                 return
         if isinstance(ifile, string_types):
-            ifile = open(ifile, 'rb')
-
-        configdict = pickle.load(ifile)
+            with open(ifile, 'rb') as ifile:
+                configdict = pickle.load(ifile)
+        else:
+            configdict = pickle.load(ifile)
         self.applyConfig(configdict)
         return ifile.name
diff --git a/lib/taurus/qt/qtgui/table/qlogtable.py b/lib/taurus/qt/qtgui/table/qlogtable.py
index bf9e691dd..18824608c 100644
--- a/lib/taurus/qt/qtgui/table/qlogtable.py
+++ b/lib/taurus/qt/qtgui/table/qlogtable.py
@@ -156,7 +156,7 @@ def __init__(self, parent=None, capacity=500000, freq=0.25):
         self._records = []
         self._accumulated_records = []
         Logger.addRootLogHandler(self)
-        self.startTimer(freq * 1000)
+        self.startTimer(int(freq * 1000))
 
     # ---------------------------------
     # Qt.QAbstractTableModel overwrite
diff --git a/tox.ini b/tox.ini
index ccdab2468..2004c844d 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ envlist =
     py27-qt4
     py{27,35,36,37}-qt5
     py37-ps2
-    py37-qt5-docs
+    py38-qt5-docs
     flake8
 
 [testenv]
@@ -25,6 +25,7 @@ conda_deps=
     py35: cython
     py36: guiqwt
     py37: guiqwt
+    py38: guiqwt
     lxml
     future
     pillow
@@ -52,7 +53,7 @@ deps=
 commands=
     python -m pytest lib/taurus
 
-[testenv:py37-qt5-docs]
+[testenv:py38-qt5-docs]
 commands=
     sphinx-build -qW doc/source/ build/sphinx/html