diff --git a/Gemfile b/Gemfile
index c476711ec84..00cf77b0301 100644
--- a/Gemfile
+++ b/Gemfile
@@ -37,7 +37,7 @@ gem 'redis-session-store', github: '18F/redis-session-store', branch: 'master'
 gem 'rqrcode'
 gem 'ruby-progressbar'
 gem 'ruby-saml'
-gem 'saml_idp', git: 'https://github.com/18F/saml_idp.git', tag: 'v0.4.2-18f'
+gem 'saml_idp', git: 'https://github.com/18F/saml_idp.git', tag: 'v0.4.3-18f'
 gem 'sass-rails', '~> 5.0'
 gem 'savon'
 gem 'scrypt'
diff --git a/Gemfile.lock b/Gemfile.lock
index 11b4e223359..9ecc2a0fdc9 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,10 +29,10 @@ GIT
 
 GIT
   remote: https://github.com/18F/saml_idp.git
-  revision: bcc3144468571b11c0136dde4b5e7f76562db060
-  tag: v0.4.2-18f
+  revision: f9917394698a3671e08058cf743e25a276887a79
+  tag: v0.4.3-18f
   specs:
-    saml_idp (0.4.0)
+    saml_idp (0.4.3.pre.18f)
       activesupport
       builder
       httparty