diff --git a/src/models.rs b/src/models.rs
index 619c349..919209c 100644
--- a/src/models.rs
+++ b/src/models.rs
@@ -18,33 +18,33 @@ pub enum SuplError {
 pub enum AbsenceEntry {
     #[serde(rename = "wholeDay")]
     WholeDay {
-        teacher: String,
+        teacher: Option<String>,
         #[serde(rename = "teacherCode")]
         teacher_code: String,
     },
     #[serde(rename = "single")]
     Single {
-        teacher: String,
+        teacher: Option<String>,
         #[serde(rename = "teacherCode")]
         teacher_code: String,
         hours: u16,
     },
     #[serde(rename = "range")]
     Range {
-        teacher: String,
+        teacher: Option<String>,
         #[serde(rename = "teacherCode")]
         teacher_code: String,
         hours: AbsenceRange,
     },
     #[serde(rename = "exkurze")]
     Exkurze {
-        teacher: String,
+        teacher: Option<String>,
         #[serde(rename = "teacherCode")]
         teacher_code: String,
     },
     #[serde(rename = "zastoupen")]
     Zastoupen {
-        teacher: String,
+        teacher: Option<String>,
         #[serde(rename = "teacherCode")]
         teacher_code: String,
         zastupuje: SubstituteInfo,
@@ -61,7 +61,7 @@ pub struct AbsenceRange {
 
 #[derive(Deserialize, Debug, uniffi::Record, Clone)]
 pub struct SubstituteInfo {
-    pub teacher: String,
+    pub teacher: Option<String>,
     #[serde(rename = "teacherCode")]
     pub teacher_code: String,
 }