diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 46d6c2f57eb04c13d580e96b3786c541b9ec2356..1d21611a381de2e1563cd203890a0f5ce06784fa 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,22 +1,8 @@
-Python 2.6:
-  script:
-  - py_version=2.6
-  - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
-  - export REQUIREMENTS_TXT=requirements.dev-2.6.txt
-  - ". ./build-and-test-py-project.sh"
-  tags:
-  - python2.6
-  - linux
-  except:
-  - tags
-  artifacts:
-    reports:
-      junit: test/pytest.xml
-
 Python 2.7:
   script:
   - py_version=2.7
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - export EXTRA_INSTALL="numpy"
   - export REQUIREMENTS_TXT=requirements.dev.txt
   - ". ./build-and-test-py-project.sh"
   tags:
@@ -32,6 +18,7 @@ Python 3:
   script:
   - py_version=3
   - curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/build-and-test-py-project.sh
+  - export EXTRA_INSTALL="numpy"
   - export REQUIREMENTS_TXT=requirements.dev.txt
   - ". ./build-and-test-py-project.sh"
   tags:
diff --git a/.travis.yml b/.travis.yml
index d94c83fcdf0e138b3eaecfe64b0fa038ee2f5b0d..fccb0b1d67225ecb32c3981cb8f9e663a5c5aa7e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,19 +1,12 @@
 language: python
 python:
-  - "2.6"
   - "2.7"
   - "3.5"
   - "3.6"
 
 # command to install dependencies
 install:
-    - |
-        PY_VER=$(python -c 'import sys; sys.stdout.write("%d.%d" % sys.version_info[:2])') ; \
-        if test "$PY_VER" = "2.6"; then \
-            pip install -r requirements.dev-2.6.txt; \
-        else \
-            pip install -r requirements.dev.txt; \
-        fi
+    - pip install -r requirements.dev.txt
     - "pip install -e ."
 
 # command to run tests
diff --git a/pudb/var_view.py b/pudb/var_view.py
index 76b868ecb5cee9d2f10f289fe2aea4b338e7da52..3f602fc36fb1fd56d48737cae0b8ad3bbfea711e 100644
--- a/pudb/var_view.py
+++ b/pudb/var_view.py
@@ -31,6 +31,7 @@ THE SOFTWARE.
 # {{{ constants and imports
 
 import urwid
+import inspect
 
 try:
     import numpy
@@ -462,7 +463,7 @@ class ValueWalker:
 
                 try:
                     attr_value = getattr(value, key)
-                    if callable(attr_value) and not iinfo.show_methods:
+                    if inspect.ismethod(attr_value) and not iinfo.show_methods:
                         cnt_omitted_methods += 1
                         continue
                 except Exception:
diff --git a/requirements.dev-2.6.txt b/requirements.dev-2.6.txt
deleted file mode 100644
index 85b131b63dd1320df05f25822a0823be40ecbee3..0000000000000000000000000000000000000000
--- a/requirements.dev-2.6.txt
+++ /dev/null
@@ -1,14 +0,0 @@
-# required by codecov. requests 2.20 dropped 2.6 support
-requests<2.20
-
-codecov==2.0.5
-coverage==4.3.4
-
-pbr==2.0.0
-py==1.4.33
-Pygments==2.2.0
-pytest==3.0.7
-pytest-cov==2.4.0
-pytest-mock==1.6.0
-six==1.10.0
-urwid==1.3.1
diff --git a/setup.py b/setup.py
index 06b576c02555760dcfaf054831591fcd8f28a4bf..3dbbe7e0831d1ff840e10d01da0740bcf177c231 100755
--- a/setup.py
+++ b/setup.py
@@ -41,7 +41,6 @@ setup(name='pudb',
           "Operating System :: Unix",
           "Programming Language :: Python",
           "Programming Language :: Python :: 2",
-          "Programming Language :: Python :: 2.6",
           "Programming Language :: Python :: 2.7",
           "Programming Language :: Python :: 3",
           "Programming Language :: Python :: 3.3",