diff --git a/requirements.txt b/requirements.txt
index 28b4746..1d0a996 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ cryptography==2.6.1
 distro==1.4.0
 entrypoints==0.3
 Flask==1.0.2
-httplib2==0.12.1
+httplib2==0.18.0
 itsdangerous==1.1.0
 jeepney==0.4
 Jinja2==2.10.1
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 11fcfac..53cfb14 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -18,7 +18,7 @@ entrypoints==0.3
 filelock==3.0.10
 flake8==3.5.0
 Flask==1.0.2
-httplib2==0.12.1
+httplib2==0.18.0
 idna==2.8
 imagesize==1.1.0
 itsdangerous==1.1.0