diff --git a/.travis/install.sh b/.travis/install.sh
index cdfbace..b8ff31a 100755
--- a/.travis/install.sh
+++ b/.travis/install.sh
@@ -40,6 +40,7 @@
             pyenv global pypy3-2.4.0
             ;;
         docs)
+            brew install enchant
             curl -O https://bootstrap.pypa.io/get-pip.py
             python get-pip.py --user
             ;;
diff --git a/docs/spelling_wordlist.txt b/docs/spelling_wordlist.txt
index c9d1b23..04ec0e6 100644
--- a/docs/spelling_wordlist.txt
+++ b/docs/spelling_wordlist.txt
@@ -13,6 +13,7 @@
 committer
 committers
 conda
+Cryptanalysis
 crypto
 cryptographic
 cryptographically
@@ -20,12 +21,15 @@
 decrypt
 decrypted
 decrypting
+DER
 deserialize
 deserialized
 Diffie
 Diffie
+disambiguating
 Django
 Docstrings
+El
 Encodings
 Fernet
 fernet
@@ -59,6 +63,7 @@
 pseudorandom
 pyOpenSSL
 relicensed
+responder
 runtime
 Schneier
 scrypt
@@ -71,6 +76,8 @@
 unencrypted
 unpadded
 unpadding
+verifier
+Verifier
 Verisign
 wildcard
 Xcode