diff --git a/build.gradle.kts b/build.gradle.kts
index 09b633561..738ba393f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -1,4 +1,4 @@
 tasks.wrapper {
-  gradleVersion = "6.2"
+  gradleVersion = "6.2.2"
   distributionType = Wrapper.DistributionType.ALL
 }
diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar
index 5c2d1cf01..f3d88b1c2 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 842267020..84a906615 100644
--- a/gradle/wrapper/gradle-wrapper.properties
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-6.2-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.2.2-all.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
diff --git a/gradlew b/gradlew
index 83f2acfdc..2fe81a7d9 100755
--- a/gradlew
+++ b/gradlew
@@ -154,19 +154,19 @@ if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
         else
             eval `echo args$i`="\"$arg\""
         fi
-        i=$((i+1))
+        i=`expr $i + 1`
     done
     case $i in
-        (0) set -- ;;
-        (1) set -- "$args0" ;;
-        (2) set -- "$args0" "$args1" ;;
-        (3) set -- "$args0" "$args1" "$args2" ;;
-        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
-        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
-        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
-        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
-        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
-        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
     esac
 fi
 
@@ -175,14 +175,9 @@ save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }
-APP_ARGS=$(save "$@")
+APP_ARGS=`save "$@"`
 
 # Collect all arguments for the java command, following the shell quoting and substitution rules
 eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
 
-# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
-if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
-  cd "$(dirname "$0")"
-fi
-
 exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
index 9618d8d96..62bd9b9cc 100644
--- a/gradlew.bat
+++ b/gradlew.bat
@@ -29,6 +29,9 @@ if "%DIRNAME%" == "" set DIRNAME=.
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
 @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
 set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
 
diff --git a/komga/build.gradle.kts b/komga/build.gradle.kts
index af493dd0a..cdd29347d 100644
--- a/komga/build.gradle.kts
+++ b/komga/build.gradle.kts
@@ -4,18 +4,18 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
   run {
-    val kotlinVersion = "1.3.61"
+    val kotlinVersion = "1.3.70"
     kotlin("jvm") version kotlinVersion
     kotlin("plugin.allopen") version kotlinVersion
     kotlin("plugin.spring") version kotlinVersion
     kotlin("plugin.jpa") version kotlinVersion
     kotlin("kapt") version kotlinVersion
   }
-  id("org.springframework.boot") version "2.2.4.RELEASE"
+  id("org.springframework.boot") version "2.2.5.RELEASE"
   id("io.spring.dependency-management") version "1.0.9.RELEASE"
-  id("com.github.ben-manes.versions") version "0.27.0"
+  id("com.github.ben-manes.versions") version "0.28.0"
   id("com.palantir.docker") version "0.25.0"
-  id("com.gorylenko.gradle-git-properties") version "2.2.1"
+  id("com.gorylenko.gradle-git-properties") version "2.2.2"
   jacoco
 }
 
@@ -69,10 +69,10 @@ dependencies {
   implementation("org.apache.tika:tika-core:1.23")
   implementation("org.apache.commons:commons-compress:1.20")
   implementation("com.github.junrar:junrar:4.0.0")
-  implementation("org.apache.pdfbox:pdfbox:2.0.18")
+  implementation("org.apache.pdfbox:pdfbox:2.0.19")
   implementation("net.grey-panther:natural-comparator:1.1")
 
-  implementation("net.coobird:thumbnailator:0.4.9")
+  implementation("net.coobird:thumbnailator:0.4.11")
   implementation("com.twelvemonkeys.imageio:imageio-jpeg:3.5")
   implementation("com.twelvemonkeys.imageio:imageio-tiff:3.5")
   implementation(files("$projectDir/libs/webp-imageio-decoder-plugin-0.2.jar"))
@@ -92,7 +92,7 @@ dependencies {
   testImplementation("io.mockk:mockk:1.9.3")
   testImplementation("com.google.jimfs:jimfs:1.1")
 
-  testCompile("com.tngtech.archunit:archunit-junit5:0.13.1")
+  testImplementation("com.tngtech.archunit:archunit-junit5:0.13.1")
 
   developmentOnly("org.springframework.boot:spring-boot-devtools")
 }