diff --git a/docs/changelog.md b/docs/changelog.md
index 999890cd..cbd13a6c 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,9 @@
 # Changelog
 
+## [0.22.2] - 2019-06-20
+### Changed
+- Remove `ngstk` requirement
+
 ## [0.22.1] - 2019-06-19
 ### Changed
 - Prohibit storing reference to full `Project` object on a `Sample`.
diff --git a/peppy/_version.py b/peppy/_version.py
index d74a4749..4212c290 100644
--- a/peppy/_version.py
+++ b/peppy/_version.py
@@ -1 +1 @@
-__version__ = "0.22.1"
+__version__ = "0.22.2"
diff --git a/requirements/requirements-all.txt b/requirements/requirements-all.txt
index 887905a4..b3440700 100644
--- a/requirements/requirements-all.txt
+++ b/requirements/requirements-all.txt
@@ -4,4 +4,3 @@ pyyaml>=5
 divvy>=0.3.2
 logmuse>=0.2
 ubiquerg>=0.4.3
-ngstk
diff --git a/requirements/requirements-doc.txt b/requirements/requirements-doc.txt
index 549087ee..343ff44b 100644
--- a/requirements/requirements-doc.txt
+++ b/requirements/requirements-doc.txt
@@ -2,6 +2,5 @@ mkdocs>=1.0
 markdown-include
 pydoc-markdown
 https://github.com/databio/mkdocs-databio/archive/master.zip
-ngstk
 ubiquerg
 peppy