diff --git a/docs/hazmat/primitives/asymmetric/ec.rst b/docs/hazmat/primitives/asymmetric/ec.rst
index f55247c..8b9a584 100644
--- a/docs/hazmat/primitives/asymmetric/ec.rst
+++ b/docs/hazmat/primitives/asymmetric/ec.rst
@@ -370,7 +370,7 @@
 .. _`FIPS 186-4`: http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf
 .. _`some concern`: https://crypto.stackexchange.com/questions/10263/should-we-trust-the-nist-recommended-ecc-parameters
 .. _`less than 224 bits`: http://www.ecrypt.eu.org/documents/D.SPA.20.pdf
-.. _`64x lower computational cost than DH`: http://www.nsa.gov/business/programs/elliptic_curve.shtml
+.. _`64x lower computational cost than DH`: https://www.nsa.gov/business/programs/elliptic_curve.shtml
 .. _`minimize the number of security concerns for elliptic-curve cryptography`: http://cr.yp.to/ecdh/curve25519-20060209.pdf
 .. _`SafeCurves`: http://safecurves.cr.yp.to/
 .. _`ECDSA`: https://en.wikipedia.org/wiki/ECDSA
diff --git a/docs/hazmat/primitives/symmetric-encryption.rst b/docs/hazmat/primitives/symmetric-encryption.rst
index 60a29a3..0f7e037 100644
--- a/docs/hazmat/primitives/symmetric-encryption.rst
+++ b/docs/hazmat/primitives/symmetric-encryption.rst
@@ -607,7 +607,7 @@
 .. _`described by Colin Percival`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html
 .. _`recommends a 96-bit IV length`: http://csrc.nist.gov/groups/ST/toolkit/BCM/documents/proposedmodes/gcm/gcm-spec.pdf
 .. _`NIST SP-800-38D`: http://csrc.nist.gov/publications/nistpubs/800-38D/SP-800-38D.pdf
-.. _`Communications Security Establishment`: http://www.cse-cst.gc.ca
+.. _`Communications Security Establishment`: https://www.cse-cst.gc.ca
 .. _`encrypt`: https://ssd.eff.org/en/module/what-encryption
 .. _`CRYPTREC`: http://www.cryptrec.go.jp/english/
 .. _`significant patterns in the output`: https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Electronic_Codebook_.28ECB.29