diff --git a/docs/hazmat/primitives/asymmetric/dsa.rst b/docs/hazmat/primitives/asymmetric/dsa.rst
index 3c3567b..179bb8d 100644
--- a/docs/hazmat/primitives/asymmetric/dsa.rst
+++ b/docs/hazmat/primitives/asymmetric/dsa.rst
@@ -438,4 +438,4 @@
 .. _`DSA`: https://en.wikipedia.org/wiki/Digital_Signature_Algorithm
 .. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography
 .. _`FIPS 186-4`: http://nvlpubs.nist.gov/nistpubs/FIPS/NIST.FIPS.186-4.pdf
-.. _`at least 2048`: http://www.ecrypt.eu.org/documents/D.SPA.20.pdf
+.. _`at least 2048`: http://www.ecrypt.eu.org/ecrypt2/documents/D.SPA.20.pdf
diff --git a/docs/hazmat/primitives/asymmetric/ec.rst b/docs/hazmat/primitives/asymmetric/ec.rst
index 6c03d77..6f4afe7 100644
--- a/docs/hazmat/primitives/asymmetric/ec.rst
+++ b/docs/hazmat/primitives/asymmetric/ec.rst
@@ -438,7 +438,7 @@
 .. _`FIPS 186-3`: http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf
 .. _`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
+.. _`less than 224 bits`: http://www.ecrypt.eu.org/ecrypt2/documents/D.SPA.20.pdf
 .. _`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/
diff --git a/docs/hazmat/primitives/asymmetric/rsa.rst b/docs/hazmat/primitives/asymmetric/rsa.rst
index e703310..a518774 100644
--- a/docs/hazmat/primitives/asymmetric/rsa.rst
+++ b/docs/hazmat/primitives/asymmetric/rsa.rst
@@ -683,7 +683,7 @@
 .. _`public-key`: https://en.wikipedia.org/wiki/Public-key_cryptography
 .. _`specific mathematical properties`: https://en.wikipedia.org/wiki/RSA_(cryptosystem)#Key_generation
 .. _`use 65537`: http://www.daemonology.net/blog/2009-06-11-cryptographic-right-answers.html
-.. _`at least 2048`: http://www.ecrypt.eu.org/documents/D.SPA.20.pdf
+.. _`at least 2048`: http://www.ecrypt.eu.org/ecrypt2/documents/D.SPA.20.pdf
 .. _`OpenPGP`: https://en.wikipedia.org/wiki/Pretty_Good_Privacy
 .. _`Chinese Remainder Theorem`: https://en.wikipedia.org/wiki/RSA_%28cryptosystem%29#Using_the_Chinese_remainder_algorithm
 .. _`security proof`: http://eprint.iacr.org/2001/062.pdf