diff --git a/vlib/crypto/aes/aes.v b/vlib/crypto/aes/aes.v
index 91b8d9f171..e027fdc082 100644
--- a/vlib/crypto/aes/aes.v
+++ b/vlib/crypto/aes/aes.v
@@ -2,7 +2,8 @@
 // Use of this source code is governed by an MIT license
 // that can be found in the LICENSE file.
 
-// Adapted from: https://github.com/golang/go/blob/master/src/crypto/aes
+// Based off:   https://github.com/golang/go/blob/master/src/crypto/aes
+// Last commit: https://github.com/golang/go/commit/691a2d457ab1bf03bd46d4b69e0f93b8993c0055
 
 module aes
 
diff --git a/vlib/crypto/md5/md5.v b/vlib/crypto/md5/md5.v
index d0dc630d87..d263fa3c2b 100644
--- a/vlib/crypto/md5/md5.v
+++ b/vlib/crypto/md5/md5.v
@@ -7,7 +7,8 @@
 // MD5 is cryptographically broken and should not be used for secure
 // applications.
 
-// Adapted from: https://github.com/golang/go/blob/master/src/crypto/md5
+// Based off:   https://github.com/golang/go/blob/master/src/crypto/md5
+// Last commit: https://github.com/golang/go/commit/ed7f323c8f4f6bc61a75146bf34f5b8f73063a17
 
 module md5
 
diff --git a/vlib/crypto/rc4/rc4.v b/vlib/crypto/rc4/rc4.v
index bb5d83d0f0..6f0e45b1b0 100644
--- a/vlib/crypto/rc4/rc4.v
+++ b/vlib/crypto/rc4/rc4.v
@@ -8,7 +8,8 @@
 // RC4 is cryptographically broken and should not be used for secure
 // applications.
 
-// Adapted from: https://github.com/golang/go/blob/master/src/crypto/rc4
+// Based off:   https://github.com/golang/go/blob/master/src/crypto/rc4
+// Last commit: https://github.com/golang/go/commit/b35dacaac57b039205d9b07ea24098e2c3fcb12e
 
 module rc4
 
diff --git a/vlib/crypto/sha1/sha1.v b/vlib/crypto/sha1/sha1.v
index b11dbfb73e..d9e672e06e 100644
--- a/vlib/crypto/sha1/sha1.v
+++ b/vlib/crypto/sha1/sha1.v
@@ -7,7 +7,8 @@
 // SHA-1 is cryptographically broken and should not be used for secure
 // applications.
 
-// Adapted from: https://github.com/golang/go/blob/master/src/crypto/sha1
+// Based off:   https://github.com/golang/go/blob/master/src/crypto/sha1
+// Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01 
 
 module sha1
 
diff --git a/vlib/crypto/sha256/sha256.v b/vlib/crypto/sha256/sha256.v
index 8202c97141..cc65096af8 100644
--- a/vlib/crypto/sha256/sha256.v
+++ b/vlib/crypto/sha256/sha256.v
@@ -5,7 +5,8 @@
 // Package sha256 implements the SHA224 and SHA256 hash algorithms as defined
 // in FIPS 180-4.
 
-// Adaped from https://github.com/golang/go/tree/master/src/crypto/sha256
+// Based off:   https://github.com/golang/go/tree/master/src/crypto/sha256
+// Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01
 
 module sha256
 
diff --git a/vlib/crypto/sha512/sha512.v b/vlib/crypto/sha512/sha512.v
index 74d6f9341d..5b92600e01 100644
--- a/vlib/crypto/sha512/sha512.v
+++ b/vlib/crypto/sha512/sha512.v
@@ -5,7 +5,8 @@
 // Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256
 // hash algorithms as defined in FIPS 180-4.
 
-// Adaped from https://github.com/golang/go/tree/master/src/crypto/sha512
+// Based off:   https://github.com/golang/go/tree/master/src/crypto/sha512
+// Last commit: https://github.com/golang/go/commit/3ce865d7a0b88714cc433454ae2370a105210c01
 
 module sha512