diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5a4d5a0..053f7c4 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -3,7 +3,6 @@ import org.jetbrains.kotlin.gradle.dsl.JvmTarget
 
 plugins {
     alias(libs.plugins.android.application)
-    alias(libs.plugins.kotlin.android)
     alias(libs.plugins.kotlin.compose)
 }
 
@@ -15,7 +14,7 @@ val keystoreProps = Properties().apply {
 
 android {
     namespace = "dev.hardline"
-    compileSdk = 36
+    compileSdk = 37
     ndkVersion = "28.2.13676358"
 
     defaultConfig {
@@ -89,7 +88,7 @@ kotlin {
 }
 
 // libusb and libuvc are not committed: fetch them before anything compiles.
-val fetchNativeDeps by tasks.registering(Exec::class) {
+val fetchNativeDeps = tasks.register<Exec>("fetchNativeDeps") {
     description = "Downloads libusb and libuvc into third_party/ and applies the patches."
     group = "build setup"
     val script = rootProject.file("scripts/fetch-deps.sh")
diff --git a/app/src/main/java/dev/hardline/media/Codec.kt b/app/src/main/java/dev/hardline/media/Codec.kt
index 85a0dff..16fae58 100644
--- a/app/src/main/java/dev/hardline/media/Codec.kt
+++ b/app/src/main/java/dev/hardline/media/Codec.kt
@@ -191,7 +191,7 @@ class VideoEncoder(
         fun pickEncoder(mime: String, width: Int, height: Int, hardware: Boolean): String? =
             MediaCodecList(MediaCodecList.REGULAR_CODECS).codecInfos.firstOrNull { info ->
                 info.isEncoder && info.supportedTypes.any { it.equals(mime, true) } && H26xDecoder.isSoftware(info) != hardware &&
-                    runCatching { info.getCapabilitiesForType(mime).videoCapabilities.isSizeSupported(width, height) }.getOrDefault(false)
+                    runCatching { info.getCapabilitiesForType(mime).videoCapabilities?.isSizeSupported(width, height) ?: false }.getOrDefault(false)
             }?.name
 
         fun isSupported(codec: VideoCodec, width: Int, height: Int): Boolean =
diff --git a/app/src/main/java/dev/hardline/media/Recorder.kt b/app/src/main/java/dev/hardline/media/Recorder.kt
index 30a1124..f9173cd 100644
--- a/app/src/main/java/dev/hardline/media/Recorder.kt
+++ b/app/src/main/java/dev/hardline/media/Recorder.kt
@@ -98,7 +98,7 @@ class Recorder(
         }
     }
 
-    fun setPaused(value: Boolean) = synchronized(lock) {
+    fun setPaused(value: Boolean): Unit = synchronized(lock) {
         if (!active || paused == value) return
         paused = value
         val now = SystemClock.elapsedRealtime()
@@ -201,7 +201,7 @@ class Recorder(
         if (failed) stop()
     }
 
-    override fun onAudioPacket(packet: AudioPacket) = synchronized(lock) {
+    override fun onAudioPacket(packet: AudioPacket): Unit = synchronized(lock) {
         if (!active || paused || muxer == null || needKey || audioTrack < 0) return
         val pts = maxOf(packet.ptsUs - baseUs - gapUs, lastAudioUs + 1)
         if (pts < 0) return
diff --git a/app/src/main/java/dev/hardline/net/SrtPublisher.kt b/app/src/main/java/dev/hardline/net/SrtPublisher.kt
index ff84611..c87891e 100644
--- a/app/src/main/java/dev/hardline/net/SrtPublisher.kt
+++ b/app/src/main/java/dev/hardline/net/SrtPublisher.kt
@@ -467,7 +467,7 @@ class SrtPublisher(private val c: CameraController, override val target: PushTar
         val sink = object : VideoSink, AudioSink {
             override fun onVideoConfig(config_: VideoConfig) { config = config_ }
             override fun onAudioConfig(config: AudioConfig) = Unit
-            override fun onVideoPacket(packet: VideoPacket) = synchronized(mux) {
+            override fun onVideoPacket(packet: VideoPacket): Unit = synchronized(mux) {
                 if (!started) { if (!packet.key) return else started = true }
                 mux.video(config, packet)
             }
diff --git a/build.gradle.kts b/build.gradle.kts
index 9deb573..020183f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,5 +1,4 @@
 plugins {
     alias(libs.plugins.android.application) apply false
-    alias(libs.plugins.kotlin.android) apply false
     alias(libs.plugins.kotlin.compose) apply false
 }
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index fd73afb..e7dfdd6 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,13 +1,13 @@
 [versions]
-agp = "8.13.2"
-kotlin = "2.2.21"
-compose-bom = "2025.12.01"
+agp = "9.4.1"
+kotlin = "2.4.20"
+compose-bom = "2026.09.00"
 activity-compose = "1.12.2"
 lifecycle = "2.9.4"
-core-ktx = "1.17.0"
-exifinterface = "1.4.1"
+core-ktx = "1.19.1"
+exifinterface = "1.4.2"
 documentfile = "1.1.0"
-coroutines = "1.10.2"
+coroutines = "1.11.0"
 commons-net = "3.12.0"
 android-mail = "1.6.8"
 zxing = "3.5.4"
@@ -32,5 +32,4 @@ junit = { module = "junit:junit", version.ref = "junit" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
-kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
 kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 1b33c55..9fa7f28 100644
Binary files a/gradle/wrapper/gradle-wrapper.jar and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties
index 4f5eb9d..2e7bb9f 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,7 +1,9 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.14.5-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.8.1-bin.zip
 networkTimeout=10000
+retries=0
+retryBackOffMs=500
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 23d15a9..249efbb 100755
--- a/gradlew
+++ b/gradlew
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 #
-# Copyright © 2015-2021 the original authors.
+# Copyright © 2015 the original authors.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -20,7 +20,7 @@
 
 ##############################################################################
 #
-#   Gradle start up script for POSIX generated by Gradle.
+#   gradlew start up script for POSIX generated by Gradle.
 #
 #   Important for running:
 #
@@ -29,7 +29,7 @@
 #       bash, then to run this script, type that shell name before the whole
 #       command line, like:
 #
-#           ksh Gradle
+#           ksh gradlew
 #
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:
@@ -57,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/3d91ce3b8caaf77ad09f381f43615b715b53f72c/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -114,7 +114,6 @@ case "$( uname )" in                #(
   NONSTOP* )        nonstop=true ;;
 esac
 
-CLASSPATH="\\\"\\\""
 
 
 # Determine the Java command to use to start the JVM.
@@ -172,7 +171,6 @@ fi
 # For Cygwin or MSYS, switch paths to Windows format before running java
 if "$cygwin" || "$msys" ; then
     APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
-    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
 
     JAVACMD=$( cygpath --unix "$JAVACMD" )
 
@@ -212,7 +210,6 @@ DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
-        -classpath "$CLASSPATH" \
         -jar "$APP_HOME/gradle/wrapper/gradle-wrapper.jar" \
         "$@"
 
diff --git a/gradlew.bat b/gradlew.bat
index db3a6ac..3185a43 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -19,12 +19,39 @@
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
-@rem  Gradle startup script for Windows
+@rem  gradlew startup script for Windows
 @rem
 @rem ##########################################################################
 
-@rem Set local scope for the variables with windows NT shell
-if "%OS%"=="Windows_NT" setlocal
+@rem Set local scope for the variables, and ensure extensions are enabled
+setlocal EnableExtensions
+
+@rem Catch executions from older scripts and ensure they exit cleanly.
+@rem This can be removed once we can be reasonably confident that few people
+@rem will be migrating directly to this new wrapper.
+goto afterSafetyNet
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
+goto exitWithErrorLevel
+:afterSafetyNet
 
 set DIRNAME=%~dp0
 if "%DIRNAME%"=="" set DIRNAME=.
@@ -45,13 +72,14 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo. 1>&2
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
+1>&2 echo.
+1>&2 echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+1>&2 echo.
+1>&2 echo Please set the JAVA_HOME variable in your environment to match the
+1>&2 echo location of your Java installation.
 
-goto fail
+"%COMSPEC%" /c exit 1
+goto exitWithErrorLevel
 
 :findJavaFromJavaHome
 set JAVA_HOME=%JAVA_HOME:"=%
@@ -59,36 +87,26 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo. 1>&2
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
-echo. 1>&2
-echo Please set the JAVA_HOME variable in your environment to match the 1>&2
-echo location of your Java installation. 1>&2
+1>&2 echo.
+1>&2 echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+1>&2 echo.
+1>&2 echo Please set the JAVA_HOME variable in your environment to match the
+1>&2 echo location of your Java installation.
 
-goto fail
+"%COMSPEC%" /c exit 1
+goto exitWithErrorLevel
 
 :execute
 @rem Setup the command line
 
-set CLASSPATH=
 
 
-@rem Execute Gradle
-"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %*
+@rem Execute gradlew
+@rem endlocal doesn't take effect until after the line is parsed and variables are expanded
+@rem which allows us to clear the local environment before executing the java command
+endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel & goto exitWithErrorLevel
 
-:end
-@rem End local scope for the variables with windows NT shell
-if %ERRORLEVEL% equ 0 goto mainEnd
-
-:fail
-rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
-rem the _cmd.exe /c_ return code!
-set EXIT_CODE=%ERRORLEVEL%
-if %EXIT_CODE% equ 0 set EXIT_CODE=1
-if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
-exit /b %EXIT_CODE%
-
-:mainEnd
-if "%OS%"=="Windows_NT" endlocal
-
-:omega
+@rem This label must not be changed. We rely on old scripts being able to jump to this point.
+:exitWithErrorLevel
+@rem Use "%COMSPEC%" /c exit to allow operators to work properly in scripts
+"%COMSPEC%" /c exit %ERRORLEVEL%