diff --git a/build.gradle b/build.gradle
index 6f063b9..7a1797d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,24 +1,29 @@
 plugins {
     id "com.github.johnrengelman.shadow" version "8.1.1"
+    id 'java'
+    id 'application'
+    id 'maven-publish'
 }
 
-apply plugin: 'java'
-apply plugin: 'application'
-apply plugin: 'maven-publish'
-
-mainClassName = 'org.nick.abe.Main'
+application.mainClass.set 'org.nick.abe.Main'
 
 group = 'org.nick.abe'
 
-sourceCompatibility = 11
-targetCompatibility = 11
+var targetJavaVersion = JavaVersion.VERSION_1_8
+java {
+    sourceCompatibility = targetCompatibility = targetJavaVersion
+}
+
+compileJava {
+    options.release.set targetJavaVersion.majorVersion.toInteger()
+}
 
 repositories {
     mavenCentral()
 }
 
 dependencies {
-    implementation 'org.bouncycastle:bcprov-jdk15on:1.70'
+    implementation 'org.bouncycastle:bcprov-jdk18on:1.77'
 }
 
 sourceSets {
@@ -31,8 +36,7 @@ sourceSets {
 
 shadowJar {
     minimize()
-    archiveBaseName = 'abe'
-    archiveClassifier = ''
+    archiveBaseName.set 'abe'
 }
 
 publishing {
diff --git a/build.xml b/build.xml
index 6e2a71f..8914650 100644
--- a/build.xml
+++ b/build.xml
@@ -3,7 +3,7 @@
 
     <property name="jar.filename" value="abe.jar"/>
     <property name="main.class" value="org.nick.abe.Main"/>
-    <property name="bcprov.jar" value="lib/bcprov-jdk15on-1.70.jar"/>
+    <property name="bcprov.jar" value="lib/bcprov-jdk18on-1.77.jar"/>
 
     <target name="all" depends="build,jar"/>
 
@@ -13,7 +13,7 @@
         </delete>
         <mkdir dir="build"/>
         <javac srcdir="src" destdir="build" classpath="${bcprov.jar}" debug="true" includeantruntime="false"
-               encoding="UTF-8" source="11"/>
+               encoding="UTF-8" source="8" target="8" release="8"/>
     </target>
 
     <target name="jar" depends="build" description="Create a standalone-jar (no external dependency)">
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index c1962a7..d64cd49 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 0c85a1f..a80b22c 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.6-bin.zip
 networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index aeb74cb..1aa94a4 100755
--- a/gradlew
+++ b/gradlew
@@ -83,7 +83,8 @@ done
 # This is normally unused
 # shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd "${APP_HOME:-./}" > /dev/null && pwd -P ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -130,10 +131,13 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
@@ -141,7 +145,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
         # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
@@ -149,7 +153,7 @@ if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
       '' | soft) :;; #(
       *)
         # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
-        # shellcheck disable=SC3045
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -198,11 +202,11 @@ fi
 # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
diff --git a/gradlew.bat b/gradlew.bat
index 6689b85..7101f8e 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -43,11 +43,11 @@ set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
 if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+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
 
 goto fail
 
@@ -57,11 +57,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+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
 
 goto fail
 
diff --git a/pom.xml b/pom.xml
index a1f0291..419cae2 100644
--- a/pom.xml
+++ b/pom.xml
@@ -6,9 +6,9 @@
   <version>1.0.0-SNAPSHOT</version>
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-    <javac.source>11</javac.source>
-    <javac.target>11</javac.target>
-    <javac.release>11</javac.release>
+    <javac.source>8</javac.source>
+    <javac.target>8</javac.target>
+    <javac.release>8</javac.release>
   </properties>
   <scm>
     <developerConnection>scm:git:ssh:git@github.com:nelenkov/android-backup-extractor.git</developerConnection>
@@ -17,8 +17,8 @@
   <dependencies>
     <dependency>
       <groupId>org.bouncycastle</groupId>
-      <artifactId>bcprov-jdk15on</artifactId>
-      <version>1.70</version>
+      <artifactId>bcprov-jdk18on</artifactId>
+      <version>1.77</version>
     </dependency>
   </dependencies>
   <build>