diff --git a/docs/hazmat/bindings/index.rst b/docs/hazmat/bindings/index.rst
index 80f5359..163e82e 100644
--- a/docs/hazmat/bindings/index.rst
+++ b/docs/hazmat/bindings/index.rst
@@ -1,6 +1,13 @@
 Bindings
 ========
 
+.. danger::
+
+    This is a "Hazardous Materials" module. You should **ONLY** use it if
+    you're 100% absolutely sure that you know what you're doing because this
+    module is full of land mines, dragons, and dinosaurs with laser guns.
+
+
 .. toctree::
     :maxdepth: 1
 
diff --git a/docs/hazmat/bindings/openssl.rst b/docs/hazmat/bindings/openssl.rst
index 5a00395..0453246 100644
--- a/docs/hazmat/bindings/openssl.rst
+++ b/docs/hazmat/bindings/openssl.rst
@@ -1,11 +1,11 @@
 OpenSSL
 =======
 
-.. warning::
+.. danger::
 
-    The OpenSSL API is not easy to use, small mistakes can lead to significant
-    security vulnerabilities. We strongly recommend not using this directly,
-    and instead using one of the higher level APIs exposed by ``cryptography``.
+    This is a "Hazardous Materials" module. You should **ONLY** use it if
+    you're 100% absolutely sure that you know what you're doing because this
+    module is full of land mines, dragons, and dinosaurs with laser guns.
 
 
 These are `CFFI`_ bindings to the `OpenSSL`_ C library.
diff --git a/docs/hazmat/primitives/cryptographic-hashes.rst b/docs/hazmat/primitives/cryptographic-hashes.rst
index 0500408..72fd869 100644
--- a/docs/hazmat/primitives/cryptographic-hashes.rst
+++ b/docs/hazmat/primitives/cryptographic-hashes.rst
@@ -1,6 +1,13 @@
 Message Digests
 ===============
 
+.. danger::
+
+    This is a "Hazardous Materials" module. You should **ONLY** use it if
+    you're 100% absolutely sure that you know what you're doing because this
+    module is full of land mines, dragons, and dinosaurs with laser guns.
+
+
 .. currentmodule:: cryptography.hazmat.primitives.hashes
 
 .. class:: BaseHash(data=None)
diff --git a/docs/hazmat/primitives/index.rst b/docs/hazmat/primitives/index.rst
index c18c62c..bd3ef41 100644
--- a/docs/hazmat/primitives/index.rst
+++ b/docs/hazmat/primitives/index.rst
@@ -1,6 +1,13 @@
 Primitives
 ==========
 
+.. danger::
+
+    This is a "Hazardous Materials" module. You should **ONLY** use it if
+    you're 100% absolutely sure that you know what you're doing because this
+    module is full of land mines, dragons, and dinosaurs with laser guns.
+
+
 .. toctree::
     :maxdepth: 1
 
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index e2586aa..e65e48d 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -1,6 +1,13 @@
 Symmetric Encryption
 ====================
 
+.. danger::
+
+    This is a "Hazardous Materials" module. You should **ONLY** use it if
+    you're 100% absolutely sure that you know what you're doing because this
+    module is full of land mines, dragons, and dinosaurs with laser guns.
+
+
 .. currentmodule:: cryptography.hazmat.primitives.block
 
 .. testsetup::