diff --git a/requirements/common.in b/requirements/common.in
index e0358f329a..036967ae2c 100644
--- a/requirements/common.in
+++ b/requirements/common.in
@@ -37,7 +37,7 @@ backports.ssl-match-hostname==3.5.0.1
 # Needed for S3 file uploads
 boto==2.48.0
 
-certifi==2017.7.27.1
+certifi==2018.1.18
 
 # Used for scrapy as well as argon2
 cffi==1.11.4
diff --git a/requirements/dev.txt b/requirements/dev.txt
index 9a727122a5..514ddf61fc 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -28,7 +28,7 @@ boto3==1.4.7              # via moto
 boto==2.48.0
 botocore==1.7.46          # via boto3, moto, s3transfer
 cchardet==2.1.1
-certifi==2017.7.27.1
+certifi==2018.1.18
 cffi==1.11.4
 chardet==3.0.4
 click==6.6                # via gitlint, pip-tools
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 74688daf00..ce830590fb 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -21,7 +21,7 @@ backports.ssl-match-hostname==3.5.0.1
 beautifulsoup4==4.6.0
 boto==2.48.0
 cchardet==2.1.1
-certifi==2017.7.27.1
+certifi==2018.1.18
 cffi==1.11.4
 chardet==3.0.4
 cryptography==2.1.4
diff --git a/requirements/thumbor.in b/requirements/thumbor.in
index dce13a2c26..05d65ce964 100644
--- a/requirements/thumbor.in
+++ b/requirements/thumbor.in
@@ -8,5 +8,5 @@ typing==3.6.4
 # https://github.com/thumbor/thumbor/issues/1006
 backports-abc==0.5
 backports.ssl-match-hostname==3.5.0.1
-certifi==2016.9.26
+certifi==2018.1.18
 singledispatch==3.4.0.3
diff --git a/requirements/thumbor.txt b/requirements/thumbor.txt
index c80aca5439..df901801c6 100644
--- a/requirements/thumbor.txt
+++ b/requirements/thumbor.txt
@@ -11,7 +11,7 @@ argparse==1.4.0           # via thumbor
 backports-abc==0.5
 backports.ssl-match-hostname==3.5.0.1
 botocore==1.5.95          # via tornado-botocore
-certifi==2016.9.26
+certifi==2018.1.18
 derpconf==0.8.1           # via thumbor
 docutils==0.14            # via botocore
 futures==3.1.1            # via thumbor