diff --git a/src/client.rs b/src/client.rs
index 1fee6a5..09ff8ca 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -200,7 +200,9 @@ impl TogglClient {
     let start_date = start.format("%Y-%m-%d").to_string();
 
     // End date is not inclusive, therefore we add one day
-    let end_date = (end + Duration::days(1)).format("%Y-%m-%d").to_string();
+    let end_date = (end + Duration::try_days(1).unwrap())
+      .format("%Y-%m-%d")
+      .to_string();
 
     let uri = format!(
       "me/time_entries?start_date={}&end_date={}",
diff --git a/src/client_tests.rs b/src/client_tests.rs
index 24bca36..e42053c 100644
--- a/src/client_tests.rs
+++ b/src/client_tests.rs
@@ -392,7 +392,7 @@ fn create_time_entry() -> anyhow::Result<()> {
       &Some("Wurst".to_string()),
       123456789,
       &Some(vec!["aa".to_string(), "bb".to_string()]),
-      Duration::seconds(200),
+      Duration::try_seconds(200).unwrap(),
       DateTime::<Local>::from_str("2021-11-21T23:58:09+01:00")?,
       123456789,
       false,
diff --git a/src/commands/reports.rs b/src/commands/reports.rs
index 28df81f..3e23d50 100644
--- a/src/commands/reports.rs
+++ b/src/commands/reports.rs
@@ -58,7 +58,7 @@ pub fn detailed(
   for (user, time_entries) in time_entries_by_user {
     let total_hours = time_entries
       .iter()
-      .map(|time_entry| Duration::milliseconds(time_entry.dur as i64))
+      .flat_map(|time_entry| Duration::try_milliseconds(time_entry.dur as i64))
       .fold(Duration::zero(), |a, b| a + b);
 
     println!();
@@ -77,7 +77,9 @@ pub fn detailed(
 
       let hours = time_entries
         .iter()
-        .map(|time_entry| Duration::milliseconds(time_entry.dur as i64))
+        .flat_map(|time_entry| {
+          Duration::try_milliseconds(time_entry.dur as i64)
+        })
         .fold(Duration::zero(), |a, b| a + b);
 
       let start = time_entries
@@ -121,8 +123,9 @@ pub fn detailed(
       // https://www.gesetze-im-internet.de/arbzg/__4.html#:~:text=Arbeitszeitgesetz%20(ArbZG),neun%20Stunden%20insgesamt%20zu%20unterbrechen.
       let formatted_break = if let Some(r#break) = r#break {
         // between 6 and less than 10 hours, break has to be at least 30 minutes
-        if (hours > Duration::hours(6) && hours < Duration::hours(10))
-          && r#break < Duration::minutes(30)
+        if (hours > Duration::try_hours(6).unwrap()
+          && hours < Duration::try_hours(10).unwrap())
+          && r#break < Duration::try_minutes(30).unwrap()
         {
           warnings.push(
             format!(
@@ -133,7 +136,8 @@ pub fn detailed(
           );
         }
         // more than 9 hours, break has to be at least 45 minutes
-        else if hours > Duration::hours(9) && r#break < Duration::minutes(45)
+        else if hours > Duration::try_hours(9).unwrap()
+          && r#break < Duration::try_minutes(45).unwrap()
         {
           warnings.push(
             format!(
diff --git a/src/commands/time_entries.rs b/src/commands/time_entries.rs
index b019925..7ddbf4d 100644
--- a/src/commands/time_entries.rs
+++ b/src/commands/time_entries.rs
@@ -133,7 +133,7 @@ fn collect_output_entries(
     let duration = if entry.duration.is_negative() {
       Duration::zero()
     } else {
-      Duration::seconds(entry.duration)
+      Duration::try_seconds(entry.duration).unwrap_or_default()
     };
 
     output_entries.push(OutputEntry {
@@ -222,7 +222,7 @@ pub fn create(
 }
 
 fn launch_break() -> Duration {
-  Duration::hours(1)
+  Duration::try_hours(1).unwrap()
 }
 
 pub(super) fn calculate_duration(
@@ -471,7 +471,12 @@ fn output_values_table(output_entries: &[OutputEntry]) {
 
       let date_row = Row::new(vec![
         TableCell::new(date.to_string().bold()),
-        TableCell::new(Duration::seconds(time_sum).hhmmss().bold()),
+        TableCell::new(
+          Duration::try_seconds(time_sum)
+            .unwrap_or_default()
+            .hhmmss()
+            .bold(),
+        ),
         TableCell::new(""),
         TableCell::new(""),
         TableCell::new(""),
@@ -524,7 +529,8 @@ fn output_values_table(output_entries: &[OutputEntry]) {
     let total_sum_row = Row::new(vec![
       TableCell::new("Total".bold()),
       TableCell::new(
-        Duration::seconds(total_time_sum)
+        Duration::try_seconds(total_time_sum)
+          .unwrap_or_default()
           .hhmmss()
           .bold()
           .underline(),
diff --git a/src/commands/time_entries_tests.rs b/src/commands/time_entries_tests.rs
index 950d401..3834983 100644
--- a/src/commands/time_entries_tests.rs
+++ b/src/commands/time_entries_tests.rs
@@ -30,7 +30,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
     project: "fkbr".to_string(),
     start: DateTime::<Local>::from_str("2021-11-21T22:58:09Z")?,
     end: None,
-    duration: Some(Duration::hours(2)),
+    duration: Some(Duration::try_hours(2).unwrap()),
     non_billable: false,
     lunch_break: false,
     description: None,
@@ -39,7 +39,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
 
   assert_eq!(
     calculate_duration(&time_entry_with_duration_but_without_end)?,
-    Duration::hours(2)
+    Duration::try_hours(2).unwrap()
   );
 
   let time_entry_without_duration_but_with_end = CreateTimeEntry {
@@ -55,7 +55,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
 
   assert_eq!(
     calculate_duration(&time_entry_without_duration_but_with_end)?,
-    Duration::hours(2)
+    Duration::try_hours(2).unwrap()
   );
 
   let time_entry_without_duration_and_without_end = CreateTimeEntry {
@@ -92,7 +92,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
     calculate_duration(
       &time_entry_with_duration_but_without_end_and_lunch_break
     )?,
-    Duration::hours(1)
+    Duration::try_hours(1).unwrap()
   );
 
   let time_entry_with_duration_but_without_end_and_lunch_break =
@@ -100,7 +100,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
       project: "fkbr".to_string(),
       start: DateTime::<Local>::from_str("2021-11-21T22:58:09Z")?,
       end: None,
-      duration: Some(Duration::hours(2)),
+      duration: Duration::try_hours(2),
       non_billable: false,
       lunch_break: false,
       description: None,
@@ -111,7 +111,7 @@ fn test_calculate_duration() -> anyhow::Result<()> {
     calculate_duration(
       &time_entry_with_duration_but_without_end_and_lunch_break
     )?,
-    Duration::hours(2)
+    Duration::try_hours(2).unwrap()
   );
 
   let time_entry_with_start_is_the_same_as_end = CreateTimeEntry {
@@ -254,7 +254,7 @@ fn test_create_workday_with_pause_2_hours() -> anyhow::Result<()> {
       description: Some("fkbr".to_string()),
       start: DateTime::<Local>::from_str("2021-11-21T22:58:09Z")?,
       end: None,
-      duration: Some(Duration::hours(2)),
+      duration: Duration::try_hours(2),
       lunch_break: false,
       project: "betamale gmbh".to_string(),
       tags: None,
@@ -403,7 +403,7 @@ fn test_create_workday_with_pause_7_hours() -> anyhow::Result<()> {
       description: Some("fkbr".to_string()),
       start: DateTime::<Local>::from_str("2021-11-21T22:58:09+01:00")?,
       end: None,
-      duration: Some(Duration::hours(7)),
+      duration: Duration::try_hours(7),
       lunch_break: true,
       project: "betamale gmbh".to_string(),
       tags: None,
diff --git a/src/model.rs b/src/model.rs
index d9890a9..0bbf42b 100644
--- a/src/model.rs
+++ b/src/model.rs
@@ -93,7 +93,7 @@ impl Range {
         missing_days.push(it);
       }
 
-      it += Duration::days(1);
+      it += Duration::try_days(1).unwrap();
     }
 
     Ok(missing_days)
@@ -108,19 +108,19 @@ impl Range {
           .single()
           .ok_or_else(|| anyhow::anyhow!("Could not create start datetime"))?;
 
-        let end = start + Duration::days(1);
+        let end = start + Duration::try_days(1).unwrap();
 
         Ok((start, end))
       }
       Range::Yesterday => {
-        let now = Local::now() - Duration::days(1);
+        let now = Local::now() - Duration::try_days(1).unwrap();
 
         let start = Local
           .with_ymd_and_hms(now.year(), now.month(), now.day(), 0, 0, 0)
           .single()
           .ok_or_else(|| anyhow::anyhow!("Could not create start datetime"))?;
 
-        let end = start + Duration::days(1);
+        let end = start + Duration::try_days(1).unwrap();
 
         Ok((start, end))
       }
@@ -130,7 +130,7 @@ impl Range {
         Ok((now.beginning_of_week(), now.end_of_week()))
       }
       Range::LastWeek => {
-        let now = Local::now() - Duration::weeks(1);
+        let now = Local::now() - Duration::try_weeks(1).unwrap();
 
         Ok((now.beginning_of_week(), now.end_of_week()))
       }
@@ -161,7 +161,7 @@ impl Range {
           )
         })?;
 
-        let end = end + Duration::days(1);
+        let end = end + Duration::try_days(1).unwrap();
 
         Ok((
           Local.from_local_datetime(&start).unwrap(),
@@ -179,7 +179,7 @@ impl Range {
             )
           })?;
 
-        let end = start + Duration::days(1);
+        let end = start + Duration::try_days(1).unwrap();
 
         Ok((start, end))
       }