diff --git a/requirements-dev.txt b/requirements-dev.txt
index 53a2becd..2aee6e90 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,7 +6,7 @@
 #
 appdirs==1.4.3            # via virtualenv
 bleach==3.1.4             # via readme-renderer
-certifi==2020.4.5.1       # via requests
+certifi==2020.4.5.2       # via requests
 cffi==1.14.0              # via cryptography
 cfgv==3.1.0               # via pre-commit
 chardet==3.0.4            # via requests
diff --git a/requirements-docs.txt b/requirements-docs.txt
index 60c1d524..7e443e1f 100644
--- a/requirements-docs.txt
+++ b/requirements-docs.txt
@@ -19,7 +19,7 @@ blinker==1.4              # via -r requirements.txt, flask-mail, flask-principal
 boto3==1.13.19            # via -r requirements.txt
 botocore==1.16.19         # via -r requirements.txt, boto3, s3transfer
 celery[redis]==4.4.2      # via -r requirements.txt
-certifi==2020.4.5.1       # via -r requirements.txt, requests
+certifi==2020.4.5.2       # via -r requirements.txt, requests
 certsrv==2.1.1            # via -r requirements.txt
 cffi==1.14.0              # via -r requirements.txt, bcrypt, cryptography, pynacl
 chardet==3.0.4            # via -r requirements.txt, requests
diff --git a/requirements-tests.txt b/requirements-tests.txt
index d237e60b..7bc040cb 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -13,7 +13,7 @@ black==19.10b0            # via -r requirements-tests.in
 boto3==1.13.19            # via aws-sam-translator, moto
 boto==2.49.0              # via moto
 botocore==1.16.19         # via aws-xray-sdk, boto3, moto, s3transfer
-certifi==2020.4.5.1       # via requests
+certifi==2020.4.5.2       # via requests
 cffi==1.14.0              # via cryptography
 cfn-lint==0.29.5          # via moto
 chardet==3.0.4            # via requests
diff --git a/requirements.txt b/requirements.txt
index eb741760..ce883ec4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ blinker==1.4              # via flask-mail, flask-principal, raven
 boto3==1.13.19            # via -r requirements.in
 botocore==1.16.19         # via -r requirements.in, boto3, s3transfer
 celery[redis]==4.4.2      # via -r requirements.in
-certifi==2020.4.5.1       # via -r requirements.in, requests
+certifi==2020.4.5.2       # via -r requirements.in, requests
 certsrv==2.1.1            # via -r requirements.in
 cffi==1.14.0              # via bcrypt, cryptography, pynacl
 chardet==3.0.4            # via requests