diff --git a/src/commands/comments.rs b/src/commands/comments.rs
index 4003911..53f8bb6 100644
--- a/src/commands/comments.rs
+++ b/src/commands/comments.rs
@@ -112,7 +112,7 @@ pub async fn execute(
                 .limit(limit)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .build();
 
             let comments = client.comments(&request).await?;
@@ -142,7 +142,7 @@ pub async fn execute(
                 .limit(limit)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .build();
 
             let comments = client.comments_by_user_address(&request).await?;
diff --git a/src/commands/events.rs b/src/commands/events.rs
index d001210..676802e 100644
--- a/src/commands/events.rs
+++ b/src/commands/events.rs
@@ -79,7 +79,7 @@ pub async fn execute(client: &gamma::Client, args: EventsArgs, output: OutputFor
                 .limit(limit)
                 .maybe_closed(resolved_closed)
                 .maybe_offset(offset)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .maybe_tag_slug(tag)
                 // EventsRequest::order is Vec<String>; into_iter on Option yields 0 or 1 items.
                 .order(order.into_iter().collect())
diff --git a/src/commands/markets.rs b/src/commands/markets.rs
index 2544d18..1cd7cb8 100644
--- a/src/commands/markets.rs
+++ b/src/commands/markets.rs
@@ -95,7 +95,7 @@ pub async fn execute(
                 .maybe_closed(resolved_closed)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .build();
 
             let markets = client.markets(&request).await?;
diff --git a/src/commands/series.rs b/src/commands/series.rs
index fc5e884..7d69676 100644
--- a/src/commands/series.rs
+++ b/src/commands/series.rs
@@ -59,7 +59,7 @@ pub async fn execute(client: &gamma::Client, args: SeriesArgs, output: OutputFor
                 .limit(limit)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .maybe_closed(closed)
                 .build();
 
diff --git a/src/commands/sports.rs b/src/commands/sports.rs
index 0782fd1..1b0d6e9 100644
--- a/src/commands/sports.rs
+++ b/src/commands/sports.rs
@@ -66,7 +66,7 @@ pub async fn execute(client: &gamma::Client, args: SportsArgs, output: OutputFor
                 .limit(limit)
                 .maybe_offset(offset)
                 .maybe_order(order)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .league(league.into_iter().collect())
                 .build();
 
diff --git a/src/commands/tags.rs b/src/commands/tags.rs
index 64aae6a..2ce338e 100644
--- a/src/commands/tags.rs
+++ b/src/commands/tags.rs
@@ -72,7 +72,7 @@ pub async fn execute(client: &gamma::Client, args: TagsArgs, output: OutputForma
             let request = TagsRequest::builder()
                 .limit(limit)
                 .maybe_offset(offset)
-                .ascending(ascending)
+                .maybe_ascending(if ascending { Some(true) } else { None })
                 .build();
 
             let tags = client.tags(&request).await?;