diff --git a/app/src/main/java/eu/kanade/presentation/more/settings/screen/about/AboutScreen.kt b/app/src/main/java/eu/kanade/presentation/more/settings/screen/about/AboutScreen.kt
index 615687aff..ba4e42c7a 100644
--- a/app/src/main/java/eu/kanade/presentation/more/settings/screen/about/AboutScreen.kt
+++ b/app/src/main/java/eu/kanade/presentation/more/settings/screen/about/AboutScreen.kt
@@ -55,8 +55,10 @@ import tachiyomi.presentation.core.icons.Reddit
 import tachiyomi.presentation.core.icons.X
 import uy.kohesive.injekt.Injekt
 import uy.kohesive.injekt.api.get
+import java.time.Instant
 import java.time.LocalDateTime
 import java.time.ZoneId
+import java.time.ZonedDateTime
 import java.time.format.DateTimeFormatter
 import java.util.Locale
 
@@ -269,11 +271,15 @@ object AboutScreen : Screen() {
 
     internal fun getFormattedBuildTime(): String {
         return try {
-            val df = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm'Z'", Locale.US)
-                .withZone(ZoneId.of("UTC"))
-            val buildTime = LocalDateTime.from(df.parse(BuildConfig.BUILD_TIME))
-
-            buildTime!!.toDateTimestampString(UiPreferences.dateFormat(Injekt.get<UiPreferences>().dateFormat().get()))
+            LocalDateTime.ofInstant(
+                Instant.parse(BuildConfig.BUILD_TIME),
+                ZoneId.systemDefault(),
+            )
+                .toDateTimestampString(
+                    UiPreferences.dateFormat(
+                        Injekt.get<UiPreferences>().dateFormat().get(),
+                    ),
+                )
         } catch (e: Exception) {
             BuildConfig.BUILD_TIME
         }
diff --git a/buildSrc/src/main/kotlin/Commands.kt b/buildSrc/src/main/kotlin/Commands.kt
index 8e5fe7649..5592c4eef 100644
--- a/buildSrc/src/main/kotlin/Commands.kt
+++ b/buildSrc/src/main/kotlin/Commands.kt
@@ -1,8 +1,8 @@
 import org.gradle.api.Project
 import java.io.ByteArrayOutputStream
-import java.text.SimpleDateFormat
-import java.util.TimeZone
-import java.util.Date
+import java.time.LocalDateTime
+import java.time.ZoneOffset
+import java.time.format.DateTimeFormatter
 
 // Git is needed in your system PATH for these commands to work.
 // If it's not installed, you can return a random value as a workaround
@@ -16,10 +16,11 @@ fun Project.getGitSha(): String {
     // return "1"
 }
 
+private val BUILD_TIME_FORMATTER = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss'Z'")
+
+@Suppress("UnusedReceiverParameter")
 fun Project.getBuildTime(): String {
-    val df = SimpleDateFormat("yyyy-MM-dd'T'HH:mm'Z'")
-    df.timeZone = TimeZone.getTimeZone("UTC")
-    return df.format(Date())
+    return LocalDateTime.now(ZoneOffset.UTC).format(BUILD_TIME_FORMATTER)
 }
 
 fun Project.runCommand(command: String): String {
@@ -29,4 +30,4 @@ fun Project.runCommand(command: String): String {
         standardOutput = byteOut
     }
     return String(byteOut.toByteArray()).trim()
-}
\ No newline at end of file
+}