diff --git a/DEVELOPMENT.md b/DEVELOPMENT.md
index 32d305ff0e..16f04c7cc2 100644
--- a/DEVELOPMENT.md
+++ b/DEVELOPMENT.md
@@ -39,7 +39,13 @@ Execute unit tests by running one of the sessions prefixed with `unit-`.
     bazel test //tests/integration:asset
     ```
 
--   Update goldens files. This overwrites the golden files in
+-   Run integration tests for all APIs.
+
+    ```sh
+    bazel test //tests/integration:all
+    ```
+
+-   Update all goldens files. This overwrites the golden files in
     `tests/integration/goldens/`.
 
     ```sh
diff --git a/tests/integration/goldens/asset/noxfile.py b/tests/integration/goldens/asset/noxfile.py
index e473409126..15e4549032 100644
--- a/tests/integration/goldens/asset/noxfile.py
+++ b/tests/integration/goldens/asset/noxfile.py
@@ -70,7 +70,7 @@ def cover(session):
 @nox.session(python=['3.6', '3.7'])
 def mypy(session):
     """Run the type checker."""
-    session.install('mypy')
+    session.install('mypy', 'types-pkg_resources')
     session.install('.')
     session.run(
         'mypy',
diff --git a/tests/integration/goldens/credentials/noxfile.py b/tests/integration/goldens/credentials/noxfile.py
index 7d27f4d101..a72fb423c0 100644
--- a/tests/integration/goldens/credentials/noxfile.py
+++ b/tests/integration/goldens/credentials/noxfile.py
@@ -70,7 +70,7 @@ def cover(session):
 @nox.session(python=['3.6', '3.7'])
 def mypy(session):
     """Run the type checker."""
-    session.install('mypy')
+    session.install('mypy', 'types-pkg_resources')
     session.install('.')
     session.run(
         'mypy',
diff --git a/tests/integration/goldens/logging/noxfile.py b/tests/integration/goldens/logging/noxfile.py
index 4a78a7f99e..10ed0a998e 100644
--- a/tests/integration/goldens/logging/noxfile.py
+++ b/tests/integration/goldens/logging/noxfile.py
@@ -70,7 +70,7 @@ def cover(session):
 @nox.session(python=['3.6', '3.7'])
 def mypy(session):
     """Run the type checker."""
-    session.install('mypy')
+    session.install('mypy', 'types-pkg_resources')
     session.install('.')
     session.run(
         'mypy',
diff --git a/tests/integration/goldens/redis/noxfile.py b/tests/integration/goldens/redis/noxfile.py
index 5b0d60db00..93380724fe 100644
--- a/tests/integration/goldens/redis/noxfile.py
+++ b/tests/integration/goldens/redis/noxfile.py
@@ -70,7 +70,7 @@ def cover(session):
 @nox.session(python=['3.6', '3.7'])
 def mypy(session):
     """Run the type checker."""
-    session.install('mypy')
+    session.install('mypy', 'types-pkg_resources')
     session.install('.')
     session.run(
         'mypy',