diff --git a/_rules/0100.md b/_rules/0100.md
index 8972e9e..72018d1 100644
--- a/_rules/0100.md
+++ b/_rules/0100.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0100
+rule_id: "0100"
 rule_category: general
 title: Understand the boundaries of your codebase
 ---
diff --git a/_rules/0105.md b/_rules/0105.md
index 786059f..97766ba 100644
--- a/_rules/0105.md
+++ b/_rules/0105.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0105
+rule_id: "0105"
 rule_category: general
 title: Use design patterns to communicate intent
 ---
diff --git a/_rules/0110.md b/_rules/0110.md
index 0bd98e3..086ad33 100644
--- a/_rules/0110.md
+++ b/_rules/0110.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0110
+rule_id: "0110"
 rule_category: general
 title: Prefer composition over inheritance
 ---
diff --git a/_rules/0112.md b/_rules/0112.md
index a60dcbc..d84e654 100644
--- a/_rules/0112.md
+++ b/_rules/0112.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0112
+rule_id: "0112"
 rule_category: general
 title: Apply the Principle of Least Surprise
 ---
diff --git a/_rules/0115.md b/_rules/0115.md
index 6c1a27c..238cb02 100644
--- a/_rules/0115.md
+++ b/_rules/0115.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0115
+rule_id: "0115"
 rule_category: general
 title: Keep It Simple Stupid (KISS)
 ---
diff --git a/_rules/0120.md b/_rules/0120.md
index 5278145..0d65d69 100644
--- a/_rules/0120.md
+++ b/_rules/0120.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0120
+rule_id: "0120"
 rule_category: general
 title: You Ain't Gonna Need It (YAGNI)
 ---
diff --git a/_rules/0125.md b/_rules/0125.md
index 177a63e..39e5064 100644
--- a/_rules/0125.md
+++ b/_rules/0125.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0125
+rule_id: "0125"
 rule_category: general
 title: Don't Repeat Yourself (DRY), but only within boundaries
 ---
diff --git a/_rules/0130.md b/_rules/0130.md
index d14bcc9..f74020d 100644
--- a/_rules/0130.md
+++ b/_rules/0130.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0130
+rule_id: "0130"
 rule_category: general
 title: Apply the four pillars of object-oriented programming
 ---
diff --git a/_rules/0135.md b/_rules/0135.md
index 62af02a..ceaaef0 100644
--- a/_rules/0135.md
+++ b/_rules/0135.md
@@ -1,5 +1,5 @@
 ---
-rule_id: 0135
+rule_id: "0135"
 rule_category: general
 title: Treat AI-generated code as your own
 ---