diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
index eb72ecd0..a1722492 100644
--- a/CODE_OF_CONDUCT.md
+++ b/CODE_OF_CONDUCT.md
@@ -1 +1 @@
-Please see the [Project Jupyter Code of Conduct](https://github.com/jupyter/governance/blob/master/conduct/code_of_conduct.md).
\ No newline at end of file
+Please see the [Project Jupyter Code of Conduct](https://github.com/jupyter/governance/blob/master/conduct/code_of_conduct.md).
diff --git a/all-spark-notebook/hooks/run_hook b/all-spark-notebook/hooks/run_hook
index cbfc0d6a..a4182183 100755
--- a/all-spark-notebook/hooks/run_hook
+++ b/all-spark-notebook/hooks/run_hook
@@ -58,4 +58,4 @@ $(docker run --rm ${IMAGE_NAME} R --silent -e 'installed.packages(.Library)[, c(
 \`\`\`
 $(docker run --rm ${IMAGE_NAME} apt list --installed)
 \`\`\`
-EOF
\ No newline at end of file
+EOF
diff --git a/all-spark-notebook/test/data/local_pyspark.ipynb b/all-spark-notebook/test/data/local_pyspark.ipynb
index 66129f52..85be3b89 100644
--- a/all-spark-notebook/test/data/local_pyspark.ipynb
+++ b/all-spark-notebook/test/data/local_pyspark.ipynb
@@ -57,4 +57,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
\ No newline at end of file
+}
diff --git a/all-spark-notebook/test/data/local_sparkR.ipynb b/all-spark-notebook/test/data/local_sparkR.ipynb
index ecf7f7c1..aaa11ba4 100644
--- a/all-spark-notebook/test/data/local_sparkR.ipynb
+++ b/all-spark-notebook/test/data/local_sparkR.ipynb
@@ -38,4 +38,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
\ No newline at end of file
+}
diff --git a/all-spark-notebook/test/data/local_sparklyr.ipynb b/all-spark-notebook/test/data/local_sparklyr.ipynb
index 8f452724..be6651ba 100644
--- a/all-spark-notebook/test/data/local_sparklyr.ipynb
+++ b/all-spark-notebook/test/data/local_sparklyr.ipynb
@@ -40,4 +40,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
\ No newline at end of file
+}
diff --git a/all-spark-notebook/test/data/local_spylon.ipynb b/all-spark-notebook/test/data/local_spylon.ipynb
index 0caf2f0a..7545d99c 100644
--- a/all-spark-notebook/test/data/local_spylon.ipynb
+++ b/all-spark-notebook/test/data/local_spylon.ipynb
@@ -60,4 +60,4 @@
  },
  "nbformat": 4,
  "nbformat_minor": 4
-}
\ No newline at end of file
+}
diff --git a/docs/Makefile b/docs/Makefile
index 7723800a..b413321e 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -17,4 +17,4 @@ help:
 # Catch-all target: route all unknown targets to Sphinx using the new
 # "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
 %: Makefile
-	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
\ No newline at end of file
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
diff --git a/docs/_static/custom.css b/docs/_static/custom.css
index 7bfd6560..af20b7af 100644
--- a/docs/_static/custom.css
+++ b/docs/_static/custom.css
@@ -1,3 +1,3 @@
 body div.sphinxsidebarwrapper p.logo {
     text-align: left;
-}
\ No newline at end of file
+}
diff --git a/docs/contributing/issues.md b/docs/contributing/issues.md
index 0cd666ac..edd8b13a 100644
--- a/docs/contributing/issues.md
+++ b/docs/contributing/issues.md
@@ -22,4 +22,4 @@ your problem.
 * If you have a general question about how to use the Jupyter Docker Stacks in
   your environment, in conjunction with other tools, with customizations, and so
   on, please post your question on the [Jupyter Discourse
-  site](https://discourse.jupyter.org).
\ No newline at end of file
+  site](https://discourse.jupyter.org).
diff --git a/docs/contributing/lint.md b/docs/contributing/lint.md
index f16c4b43..138e278f 100644
--- a/docs/contributing/lint.md
+++ b/docs/contributing/lint.md
@@ -111,4 +111,4 @@ RUN cd /tmp && echo "hello!"
 [rules]: https://github.com/hadolint/hadolint#rules
 [DL3006]: https://github.com/hadolint/hadolint/wiki/DL3006
 [DL3008]: https://github.com/hadolint/hadolint/wiki/DL3008
-[pre-commit]: https://pre-commit.com/
\ No newline at end of file
+[pre-commit]: https://pre-commit.com/
diff --git a/docs/contributing/translations.md b/docs/contributing/translations.md
index 6cc05673..b9cc1150 100644
--- a/docs/contributing/translations.md
+++ b/docs/contributing/translations.md
@@ -4,4 +4,4 @@ We are delighted when members of the Jupyter community want to help translate th
 
 1. Follow the steps documented on the [Getting Started as a Translator](https://docs.transifex.com/getting-started-1/translators) page.
 2. Look for *jupyter-docker-stacks* when prompted to choose a translation team. Alternatively, visit https://www.transifex.com/project-jupyter/jupyter-docker-stacks-1 after creating your account and request to join the project.
-3. See [Translating with the Web Editor](https://docs.transifex.com/translation/translating-with-the-web-editor) in the Transifex documentation.
\ No newline at end of file
+3. See [Translating with the Web Editor](https://docs.transifex.com/translation/translating-with-the-web-editor) in the Transifex documentation.
diff --git a/docs/using/common.md b/docs/using/common.md
index 96f3cbcc..8ccd0d63 100644
--- a/docs/using/common.md
+++ b/docs/using/common.md
@@ -127,4 +127,4 @@ conda install --channel defaults humanize
 conda config --system --prepend channels defaults
 # install a package
 conda install humanize
-```
\ No newline at end of file
+```
diff --git a/docs/using/specifics.md b/docs/using/specifics.md
index 651288ba..af6e4219 100644
--- a/docs/using/specifics.md
+++ b/docs/using/specifics.md
@@ -249,4 +249,4 @@ sess.run(hello)
 
 [sparkr]: https://spark.apache.org/docs/latest/sparkr.html
 [sparklyr]: https://spark.rstudio.com/
-[spark-conf]: https://spark.apache.org/docs/latest/configuration.html
\ No newline at end of file
+[spark-conf]: https://spark.apache.org/docs/latest/configuration.html
diff --git a/examples/make-deploy/Makefile b/examples/make-deploy/Makefile
index 71d16857..083a82c5 100644
--- a/examples/make-deploy/Makefile
+++ b/examples/make-deploy/Makefile
@@ -41,4 +41,4 @@ include softlayer.makefile
 
 # Preset notebook configurations
 include self-signed.makefile
-include letsencrypt.makefile
\ No newline at end of file
+include letsencrypt.makefile
diff --git a/minimal-notebook/test/data/notebook_math.ipynb b/minimal-notebook/test/data/notebook_math.ipynb
index 0ee2ca07..3c400349 100644
--- a/minimal-notebook/test/data/notebook_math.ipynb
+++ b/minimal-notebook/test/data/notebook_math.ipynb
@@ -146,4 +146,4 @@
    "metadata": {}
   }
  ]
-}
\ No newline at end of file
+}
diff --git a/pyspark-notebook/hooks/run_hook b/pyspark-notebook/hooks/run_hook
index d4c65521..a6df1233 100755
--- a/pyspark-notebook/hooks/run_hook
+++ b/pyspark-notebook/hooks/run_hook
@@ -48,4 +48,4 @@ $(docker run --rm ${IMAGE_NAME} conda list)
 \`\`\`
 $(docker run --rm ${IMAGE_NAME} apt list --installed)
 \`\`\`
-EOF
\ No newline at end of file
+EOF
diff --git a/pytest.ini b/pytest.ini
index 106434fb..851895e4 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -5,4 +5,4 @@ log_cli_level = INFO
 log_cli_format = %(asctime)s [%(levelname)8s] %(message)s (%(filename)s:%(lineno)s)
 log_cli_date_format=%Y-%m-%d %H:%M:%S
 markers =
-    info: marks tests as info (deselect with '-m "not info"')
\ No newline at end of file
+    info: marks tests as info (deselect with '-m "not info"')
diff --git a/scipy-notebook/hooks/run_hook b/scipy-notebook/hooks/run_hook
index 783ffa92..69c21756 100755
--- a/scipy-notebook/hooks/run_hook
+++ b/scipy-notebook/hooks/run_hook
@@ -42,4 +42,4 @@ $(docker run --rm ${IMAGE_NAME} conda list)
 \`\`\`
 $(docker run --rm ${IMAGE_NAME} apt list --installed)
 \`\`\`
-EOF
\ No newline at end of file
+EOF