diff --git a/README.md b/README.md
index afb51dbb4d..7ca80987ea 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ or to specify a set of rules to explicitly exclude using the '-exclude=' flag.
   - G303: Creating tempfile using a predictable path
   - G304: File path provided as taint input
   - G305: File traversal when extracting zip archive
-  - G401: Detect the usage of DES, RC4, or MD5
+  - G401: Detect the usage of DES, RC4, MD5 or SHA1
   - G402: Look for bad TLS connection settings
   - G403: Ensure minimum RSA key length of 2048 bits
   - G404: Insecure random number source (rand)
@@ -58,6 +58,7 @@ or to specify a set of rules to explicitly exclude using the '-exclude=' flag.
   - G502: Import blacklist: crypto/des
   - G503: Import blacklist: crypto/rc4
   - G504: Import blacklist: net/http/cgi
+  - G505: Import blacklist: crypto/sha1
 
 
 ```
diff --git a/rules/rulelist.go b/rules/rulelist.go
index 8c76a323b5..e9685b9ef6 100644
--- a/rules/rulelist.go
+++ b/rules/rulelist.go
@@ -80,7 +80,7 @@ func Generate(filters ...RuleFilter) RuleList {
 		{"G305", "File path traversal when extracting zip archive", NewArchive},
 
 		// crypto
-		{"G401", "Detect the usage of DES, RC4, or MD5", NewUsesWeakCryptography},
+		{"G401", "Detect the usage of DES, RC4, MD5 or SHA1", NewUsesWeakCryptography},
 		{"G402", "Look for bad TLS connection settings", NewIntermediateTLSCheck},
 		{"G403", "Ensure minimum RSA key length of 2048 bits", NewWeakKeyStrength},
 		{"G404", "Insecure random number source (rand)", NewWeakRandCheck},