diff --git a/Cargo.toml b/Cargo.toml
index 53c43a3..ebf38a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -11,7 +11,7 @@ keywords = ["markdown", "markdown-it"]
 categories = ["text-processing", "parsing"]
 
 [workspace.dependencies]
-markdown-it = "0.5"
+markdown-it =  { version = "0.6", default-features = false }
 regex       = ">= 1.0.0, < 2"
 once_cell   = ">= 1.0.1, < 2"
 testing     = "0.33"
diff --git a/crates/deflist/src/lib.rs b/crates/deflist/src/lib.rs
index c2f5550..4ceb295 100644
--- a/crates/deflist/src/lib.rs
+++ b/crates/deflist/src/lib.rs
@@ -70,8 +70,8 @@ pub struct DefinitionListScanner;
 
 impl BlockRule for DefinitionListScanner {
     fn check(state: &mut BlockState) -> Option<()> {
-        // if it's indented more than 3 spaces, it should be a code block
-        if state.line_indent(state.line) >= 4 {
+
+        if state.line_indent(state.line) >= state.md.max_indent {
             return None;
         }
 
@@ -85,8 +85,8 @@ impl BlockRule for DefinitionListScanner {
     }
 
     fn run(state: &mut BlockState) -> Option<(Node, usize)> {
-        // if it's indented more than 3 spaces, it should be a code block
-        if state.line_indent(state.line) >= 4 {
+
+        if state.line_indent(state.line) >= state.md.max_indent {
             return None;
         }
 
diff --git a/crates/footnote/src/definitions.rs b/crates/footnote/src/definitions.rs
index 52e3995..fc64af9 100644
--- a/crates/footnote/src/definitions.rs
+++ b/crates/footnote/src/definitions.rs
@@ -58,8 +58,8 @@ struct FootnoteDefinitionScanner;
 
 impl FootnoteDefinitionScanner {
     fn is_def(state: &mut BlockState) -> Option<(String, usize)> {
-        // if it's indented more than 3 spaces, it should be a code block
-        if state.line_indent(state.line) >= 4 {
+
+        if state.line_indent(state.line) >= state.md.max_indent {
             return None;
         }