diff --git a/requirements.txt b/requirements.txt
index e98f40a..656096c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -54,7 +54,7 @@ proto-google-cloud-datastore-v1==0.90.4
 proto-google-cloud-error-reporting-v1beta1==0.15.3
 proto-google-cloud-logging-v2==0.91.3
 protobuf==3.5.0.post1
-psutil==5.4.2
+psutil==5.6.6
 psycopg2==2.7.3.2
 pyasn1==0.4.2
 pyasn1-modules==0.2.1
diff --git a/translation_caching/requirements.txt b/translation_caching/requirements.txt
index e98f40a..656096c 100644
--- a/translation_caching/requirements.txt
+++ b/translation_caching/requirements.txt
@@ -54,7 +54,7 @@ proto-google-cloud-datastore-v1==0.90.4
 proto-google-cloud-error-reporting-v1beta1==0.15.3
 proto-google-cloud-logging-v2==0.91.3
 protobuf==3.5.0.post1
-psutil==5.4.2
+psutil==5.6.6
 psycopg2==2.7.3.2
 pyasn1==0.4.2
 pyasn1-modules==0.2.1