diff --git a/shell.nix b/shell.nix
index 1ea646f9..05d90382 100644
--- a/shell.nix
+++ b/shell.nix
@@ -29,6 +29,9 @@ in
 
         metacraft-labs.go-ethereum-capella
 
+        # Mythril
+        metacraft-labs.mythril
+
         # Test nix2container
         example-container.copyToDockerDaemon
       ]
@@ -48,7 +51,7 @@ in
 
         # Disabled until elrond-go can build with Go >= 1.19
         # Elrond
-        metacraft-labs.cryptography36
+        metacraft-labs.python-modules.cryptography36
         # metacraft-labs.erdpy
         # metacraft-labs.elrond-go
         # metacraft-labs.elrond-proxy-go