diff --git a/skills/implementing-supply-chain-security-with-in-toto/references/api-reference.md b/skills/implementing-supply-chain-security-with-in-toto/references/api-reference.md
index aa841727..7d7d9762 100644
--- a/skills/implementing-supply-chain-security-with-in-toto/references/api-reference.md
+++ b/skills/implementing-supply-chain-security-with-in-toto/references/api-reference.md
@@ -12,7 +12,7 @@
 ## Installation
 
 ```bash
-pip install in-toto securesystemslib[crypto]
+pip install in-toto 'securesystemslib[crypto]'
 ```
 
 ## CLI Commands