diff --git a/requirement_files/docklib.txt b/requirement_files/docklib.txt
new file mode 100644
index 0000000..5fed575
--- /dev/null
+++ b/requirement_files/docklib.txt
@@ -0,0 +1 @@
+docklib==1.2.0
diff --git a/requirement_files/requirements_opinionated.txt b/requirement_files/requirements_opinionated.txt
index 3c2ffa7..390159d 100755
--- a/requirement_files/requirements_opinionated.txt
+++ b/requirement_files/requirements_opinionated.txt
@@ -3,6 +3,7 @@
 -r atomicwrites.txt
 -r black.txt
 -r boto.txt
+-r docklib.txt
 -r entrypoints.txt
 -r flake8-bugbear.txt
 -r funcsigs.txt
diff --git a/requirement_files/requirements_recommended.txt b/requirement_files/requirements_recommended.txt
index 505867a..93dda64 100644
--- a/requirement_files/requirements_recommended.txt
+++ b/requirement_files/requirements_recommended.txt
@@ -1,5 +1,6 @@
 -r aspy.yaml.txt
 -r black.txt
+-r docklib.txt
 -r entrypoints.txt
 -r flake8-bugbear.txt
 -r isort.txt
diff --git a/requirements_opinionated.txt b/requirements_opinionated.txt
index 9f17b8a..ddccfad 100644
--- a/requirements_opinionated.txt
+++ b/requirements_opinionated.txt
@@ -13,6 +13,7 @@ cfgv==3.1.0
 chardet==3.0.4
 click==7.1.2
 distlib==0.3.1
+docklib==1.2.0
 docutils==0.16
 entrypoints==0.3
 filelock==3.0.12
diff --git a/requirements_recommended.txt b/requirements_recommended.txt
index 6fc3e19..ef712ee 100644
--- a/requirements_recommended.txt
+++ b/requirements_recommended.txt
@@ -8,6 +8,7 @@ cfgv==3.1.0
 chardet==3.0.4
 click==7.1.2
 distlib==0.3.1
+docklib==1.2.0
 entrypoints==0.3
 filelock==3.0.12
 flake8-bugbear==20.1.4