diff --git a/README.md b/README.md
index f9d7339..9e4d950 100644
--- a/README.md
+++ b/README.md
@@ -26,7 +26,7 @@ then to run:
 Extensions(94) | Tools(61)
 ----------:| -----
 .* | [contents](http://pygments.org/) • metadata • [git_blame](https://git-scm.com/docs/git-blame) • [git_log](https://git-scm.com/docs/git-log)
-.py | [python_syntax](https://en.wikipedia.org/wiki/Python_syntax_and_semantics) • [python_unittests](https://docs.python.org/3/library/unittest.html) • [pydoc](https://docs.python.org/3/library/pydoc.html) • [mypy](http://mypy-lang.org/) • [python_coverage](https://coverage.readthedocs.io/) • [pycodestyle](http://pycodestyle.pycqa.org/en/latest/) • [pydocstyle](http://pycodestyle.pycqa.org/en/latest/) • [pyflakes](https://pypi.org/project/pyflakes/) • [pylint](https://www.pylint.org/) • [python_gut](https://github.com/ahamilton/eris/blob/master/gut.py) • [python_modulefinder](https://docs.python.org/3/library/modulefinder.html) • [dis](https://docs.python.org/3/library/dis.html) • [python_mccabe](https://pypi.org/project/mccabe/) • [bandit](https://pypi.org/project/bandit/)
+.py | [python_syntax](https://en.wikipedia.org/wiki/Python_syntax_and_semantics) • [python_unittests](https://docs.python.org/3/library/unittest.html) • [pydoc](https://docs.python.org/3/library/pydoc.html) • [mypy](http://mypy-lang.org/) • [python_coverage](https://coverage.readthedocs.io/) • [pycodestyle](http://pycodestyle.pycqa.org/en/latest/) • [pydocstyle](http://www.pydocstyle.org/en/2.1.1/usage.html) • [pyflakes](https://pypi.org/project/pyflakes/) • [pylint](https://www.pylint.org/) • [python_gut](https://github.com/ahamilton/eris/blob/master/gut.py) • [python_modulefinder](https://docs.python.org/3/library/modulefinder.html) • [dis](https://docs.python.org/3/library/dis.html) • [python_mccabe](https://pypi.org/project/mccabe/) • [bandit](https://pypi.org/project/bandit/)
 .pl .pm .t | [perl_syntax](https://en.wikipedia.org/wiki/Perl) • [perldoc](http://perldoc.perl.org/) • [perltidy](http://perltidy.sourceforge.net/)
 .pod .pod6 | [perldoc](http://perldoc.perl.org/)
 .java | [uncrustify](https://github.com/uncrustify/uncrustify)
@@ -38,7 +38,7 @@ Extensions(94) | Tools(61)
 .php | [php7_syntax](https://en.wikipedia.org/wiki/PHP)
 .go | [gofmt](https://golang.org) • [go_vet](https://golang.org) • [golint](https://github.com/golang/lint) • [godoc](http://golang.org/x/tools)
 .bash .sh .dash .ksh | [shellcheck](https://www.shellcheck.net/)
-.pdf | [pdf2txt](https://euske.github.io/pdfminer/)
+.pdf | [pdf2txt](https://github.com/pdfminer/pdfminer.six)
 .html .htm | [html_syntax](http://www.html-tidy.org/) • [tidy](http://www.html-tidy.org/) • [html2text](http://www.mbayer.de/html2text/) • [pandoc](https://pandoc.org/)
 .yaml .yml | [yamllint](https://github.com/adrienverge/yamllint)
 .md .epub .docx .odt .rst | [pandoc](https://pandoc.org/)
diff --git a/eris/tools.py b/eris/tools.py
index 577b111..3f26132 100644
--- a/eris/tools.py
+++ b/eris/tools.py
@@ -340,27 +340,6 @@ def python_coverage(path):
             "No corresponding test file: " + os.path.normpath(test_path))
 
 
-@deps(deps={"pip/pycodestyle"}, url="http://pycodestyle.pycqa.org/en/latest/")
-def pycodestyle(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "pycodestyle", path])
-
-
-@deps(deps={"pip/pydocstyle"}, url="http://pycodestyle.pycqa.org/en/latest/")
-def pydocstyle(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "pydocstyle", path])
-
-
-@deps(deps={"pip/pyflakes"}, url="https://pypi.org/project/pyflakes/")
-def pyflakes(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "pyflakes", path])
-
-
-@deps(deps={"pip/pylint"}, url="https://www.pylint.org/")
-def pylint(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "pylint", "--errors-only",
-                         path])
-
-
 @deps(url="https://github.com/ahamilton/eris/blob/master/gut.py")
 def python_gut(path):
     with open(path) as module_file:
@@ -369,17 +348,6 @@ def python_gut(path):
     return Status.normal, source_widget
 
 
-@deps(url="https://docs.python.org/3/library/modulefinder.html")
-def python_modulefinder(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "modulefinder", path],
-                        Status.normal)
-
-
-@deps(url="https://docs.python.org/3/library/dis.html")
-def dis(path):
-    return _run_command([PYTHON_EXECUTABLE, "-m", "dis", path], Status.normal)
-
-
 def _get_mccabe_line_score(line):
     position, function_name, score = line.split()
     return int(score)
diff --git a/eris/tools.toml b/eris/tools.toml
index 8c6d2d5..ec9de86 100644
--- a/eris/tools.toml
+++ b/eris/tools.toml
@@ -44,6 +44,39 @@ tools_for_extensions = [
    [["iso"], ["isoinfo"]],
    ]
 
+
+[pycodestyle]
+  dependencies = ["pip/pycodestyle"]
+  url = "http://pycodestyle.pycqa.org/en/latest/"
+  command = "python3.7 -m pycodestyle"
+
+[pydocstyle]
+  dependencies = ["pip/pydocstyle"]
+  url = "http://www.pydocstyle.org/en/2.1.1/usage.html"
+  command = "python3.7 -m pydocstyle"
+
+[pyflakes]
+  dependencies = ["pip/pyflakes"]
+  url = "https://pypi.org/project/pyflakes/"
+  command = "python3.7 -m pyflakes"
+
+[pylint]
+  dependencies = ["pip/pylint"]
+  url = "https://www.pylint.org/"
+  command = "python3.7 -m pylint --errors-only"
+
+[python_modulefinder]
+  dependencies = []
+  url = "https://docs.python.org/3/library/modulefinder.html"
+  command = "python3.7 -m modulefinder"
+  success_status = "normal"
+
+[dis]
+  dependencies = []
+  url = "https://docs.python.org/3/library/dis.html"
+  command = "python3.7 -m dis"
+  success_status = "normal"
+
 [git_blame]
   dependencies = ["git"]
   url = "https://git-scm.com/docs/git-blame"