diff --git a/app/build.gradle b/app/build.gradle
index cea9ae81..435a2f56 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -166,7 +166,7 @@ ext {
 }
 
 dependencies {
-    implementation "io.github.wulkanowy:sdk:8f3721f1f9"
+    implementation "io.github.wulkanowy:sdk:230d2075df"
 
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
 
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
index 87b3362d..4a5a0699 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableAdapter.kt
@@ -360,7 +360,7 @@ class TimetableAdapter @Inject constructor() : RecyclerView.Adapter<RecyclerView
     private fun updateTeacherColor(teacherTextView: TextView, lesson: Timetable) {
         teacherTextView.setTextColor(
             teacherTextView.context.getThemeAttrColor(
-                if (lesson.teacherOld.isNotBlank() && lesson.teacherOld != lesson.teacher) R.attr.colorTimetableChange
+                if (lesson.teacherOld.isNotBlank()) R.attr.colorTimetableChange
                 else android.R.attr.textColorSecondary
             )
         )
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableDialog.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableDialog.kt
index bead8fb2..5bbaaa60 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableDialog.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetable/TimetableDialog.kt
@@ -89,14 +89,22 @@ class TimetableDialog : DialogFragment() {
                                 R.attr.colorPrimary
                             )
                         )
-                        timetableDialogChangesValue.setTextColor(requireContext().getThemeAttrColor(R.attr.colorPrimary))
+                        timetableDialogChangesValue.setTextColor(
+                            requireContext().getThemeAttrColor(
+                                R.attr.colorPrimary
+                            )
+                        )
                     } else {
                         timetableDialogChangesTitle.setTextColor(
                             requireContext().getThemeAttrColor(
                                 R.attr.colorTimetableChange
                             )
                         )
-                        timetableDialogChangesValue.setTextColor(requireContext().getThemeAttrColor(R.attr.colorTimetableChange))
+                        timetableDialogChangesValue.setTextColor(
+                            requireContext().getThemeAttrColor(
+                                R.attr.colorTimetableChange
+                            )
+                        )
                     }
 
                     timetableDialogChangesValue.text = when {
@@ -128,6 +136,15 @@ class TimetableDialog : DialogFragment() {
                         }
                     }
                 }
+                teacherOld.isNotBlank() && teacherOld == teacher -> {
+                    timetableDialogTeacherValue.run {
+                        visibility = GONE
+                    }
+                    timetableDialogTeacherNewValue.run {
+                        visibility = VISIBLE
+                        text = teacher
+                    }
+                }
                 teacher.isNotBlank() -> timetableDialogTeacherValue.text = teacher
                 else -> {
                     timetableDialogTeacherTitle.visibility = GONE
diff --git a/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt b/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt
index 45b79b50..c8dda23c 100644
--- a/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt
+++ b/app/src/main/java/io/github/wulkanowy/ui/modules/timetablewidget/TimetableWidgetFactory.kt
@@ -173,7 +173,7 @@ class TimetableWidgetFactory(
             updateNotCanceledLessonNumberColor(this, lesson)
             updateNotCanceledSubjectColor(this, lesson)
 
-            val teacherChange = lesson.teacherOld.isNotBlank() && lesson.teacher != lesson.teacherOld
+            val teacherChange = lesson.teacherOld.isNotBlank()
             updateNotCanceledRoom(this, lesson, teacherChange)
             updateNotCanceledTeacher(this, lesson, teacherChange)
         }