diff --git a/src/html.rs b/src/html.rs
index 40e92966..55bf5bc0 100644
--- a/src/html.rs
+++ b/src/html.rs
@@ -361,7 +361,7 @@ where
     Ok(())
 }
 
-impl<'o, 'c> HtmlFormatter<'o, 'c> {
+impl<'o, 'c: 'o> HtmlFormatter<'o, 'c> {
     fn new(
         options: &'o Options<'c>,
         output: &'o mut WriteWithLast<'o>,
diff --git a/src/parser/mod.rs b/src/parser/mod.rs
index dae598ec..0993dadf 100644
--- a/src/parser/mod.rs
+++ b/src/parser/mod.rs
@@ -938,7 +938,7 @@ struct FootnoteDefinition<'a> {
     total_references: u32,
 }
 
-impl<'a, 'o, 'c> Parser<'a, 'o, 'c> {
+impl<'a, 'o, 'c: 'o> Parser<'a, 'o, 'c> {
     fn new(arena: &'a Arena<AstNode<'a>>, root: &'a AstNode<'a>, options: &'o Options<'c>) -> Self {
         Parser {
             arena,