diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # Changelog for `wai-saml2`
 
+## 0.7.2
+
+-   Increased upper version bound for `crypton`.
+-   Increased upper version bound for `containers`.
+
 ## 0.7.1
 
 -   Fixed spelling of attribute `AllowCreate` in `NameIDPolicy` ([#88](https://github.com/mbg/wai-saml2/pull/88) by [@Philonous](https://github.com/Philonous))
diff --git a/wai-saml2.cabal b/wai-saml2.cabal
--- a/wai-saml2.cabal
+++ b/wai-saml2.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           wai-saml2
-version:        0.7.1
+version:        0.7.2
 synopsis:       SAML2 assertion validation as WAI middleware
 description:    A Haskell library which implements SAML2 assertion validation as WAI middleware
 category:       Security
@@ -74,8 +74,8 @@
     , base64-bytestring >=0.1 && <2
     , bytestring >=0.9 && <0.13
     , c14n >=0.1.0.1 && <1
-    , containers >=0.6 && <0.8
-    , crypton <2
+    , containers >=0.6 && <0.9
+    , crypton <3
     , crypton-x509 <2
     , crypton-x509-store <2
     , data-default-class <1
@@ -111,8 +111,8 @@
     , base64-bytestring >=0.1 && <2
     , bytestring
     , c14n >=0.1.0.1 && <1
-    , containers >=0.6 && <0.8
-    , crypton <2
+    , containers >=0.6 && <0.9
+    , crypton <3
     , crypton-x509 <2
     , crypton-x509-store <2
     , data-default-class <1