diff --git a/requirements.in b/requirements.in
index a85caacf..d891165f 100644
--- a/requirements.in
+++ b/requirements.in
@@ -329,7 +329,7 @@ python-dateutil==2.9.0.post0
     #   google-cloud-bigquery
     #   matplotlib
     #   pandas
-python-discovery==1.3.0
+python-discovery==1.4.2
     # via
     #   tox
     #   virtualenv
diff --git a/requirements.txt b/requirements.txt
index 9eb3a49e..bec94e8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2053,9 +2053,9 @@ python-dateutil==2.9.0.post0 \
     #   google-cloud-bigquery
     #   matplotlib
     #   pandas
-python-discovery==1.3.0 \
-    --hash=sha256:441d9ced3dfce36e113beb35ca302c71c7ef06f3c0f9c227a0b9bb3bd49b9e9f \
-    --hash=sha256:d098f1e86be5d45fe4d14bf1029294aabbd332f4321179dec85e76cddce834b0
+python-discovery==1.4.2 \
+    --hash=sha256:475803f53b7b2ed6e490e27373f9d8340f7d2eebf9acdaf645d7d714c97bb500 \
+    --hash=sha256:8f3746c4b4968d22afbb97d36e1a0e5b66e6c0f297290f2e95f05b9b8bf18690
     # via
     #   -r requirements.in
     #   tox