diff --git a/.idea/compiler.xml b/.idea/compiler.xml
index 69fb739cd..eb6e630bd 100644
--- a/.idea/compiler.xml
+++ b/.idea/compiler.xml
@@ -2,10 +2,27 @@
 <project version="4">
   <component name="CompilerConfiguration">
     <annotationProcessing>
-      <profile name="Maven default annotation processors profile" enabled="true">
+      <profile name="Annotation profile for Cryptomator" enabled="true">
         <sourceOutputDir name="target/generated-sources/annotations" />
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
         <outputRelativeToContentRoot value="true" />
+        <processorPath useClasspath="false">
+          <entry name="$MAVEN_REPOSITORY$/com/google/dagger/dagger-compiler/2.20/dagger-compiler-2.20.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/dagger/dagger/2.20/dagger-2.20.jar" />
+          <entry name="$MAVEN_REPOSITORY$/javax/inject/javax.inject/1/javax.inject-1.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/dagger/dagger-producers/2.20/dagger-producers-2.20.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/guava/guava/25.0-jre/guava-25.0-jre.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/code/findbugs/jsr305/1.3.9/jsr305-1.3.9.jar" />
+          <entry name="$MAVEN_REPOSITORY$/org/checkerframework/checker-compat-qual/2.5.3/checker-compat-qual-2.5.3.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/errorprone/error_prone_annotations/2.1.3/error_prone_annotations-2.1.3.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/j2objc/j2objc-annotations/1.1/j2objc-annotations-1.1.jar" />
+          <entry name="$MAVEN_REPOSITORY$/org/codehaus/mojo/animal-sniffer-annotations/1.14/animal-sniffer-annotations-1.14.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/dagger/dagger-spi/2.20/dagger-spi-2.20.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/googlejavaformat/google-java-format/1.5/google-java-format-1.5.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/google/errorprone/javac-shaded/9-dev-r4023-3/javac-shaded-9-dev-r4023-3.jar" />
+          <entry name="$MAVEN_REPOSITORY$/com/squareup/javapoet/1.11.1/javapoet-1.11.1.jar" />
+          <entry name="$MAVEN_REPOSITORY$/javax/annotation/jsr250-api/1.0/jsr250-api-1.0.jar" />
+        </processorPath>
         <module name="commons" />
         <module name="keychain" />
         <module name="launcher" />
diff --git a/main/ant-kit/.gitignore b/main/ant-kit/.gitignore
deleted file mode 100644
index b83d22266..000000000
--- a/main/ant-kit/.gitignore
+++ /dev/null
@@ -1 +0,0 @@
-/target/
diff --git a/main/ant-kit/pom.xml b/main/ant-kit/pom.xml
index 4618b28c1..7b9301ebf 100644
--- a/main/ant-kit/pom.xml
+++ b/main/ant-kit/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>ant-kit</artifactId>
 	<packaging>pom</packaging>
diff --git a/main/commons/pom.xml b/main/commons/pom.xml
index b5186a3ae..002de7da5 100644
--- a/main/commons/pom.xml
+++ b/main/commons/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>commons</artifactId>
 	<name>Cryptomator Commons</name>
diff --git a/main/keychain/pom.xml b/main/keychain/pom.xml
index 074472db7..5e5e28e22 100644
--- a/main/keychain/pom.xml
+++ b/main/keychain/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>keychain</artifactId>
 	<name>System Keychain Access</name>
diff --git a/main/launcher/pom.xml b/main/launcher/pom.xml
index 2aac33a3a..e98029baa 100644
--- a/main/launcher/pom.xml
+++ b/main/launcher/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>launcher</artifactId>
 	<name>Cryptomator Launcher</name>
diff --git a/main/pom.xml b/main/pom.xml
index 31e7a2a90..1f792c630 100644
--- a/main/pom.xml
+++ b/main/pom.xml
@@ -3,7 +3,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.cryptomator</groupId>
 	<artifactId>main</artifactId>
-	<version>1.4.1</version>
+	<version>1.4.2</version>
 	<packaging>pom</packaging>
 	<name>Cryptomator</name>
 
diff --git a/main/uber-jar/pom.xml b/main/uber-jar/pom.xml
index 33b26ecad..8b33a18f4 100644
--- a/main/uber-jar/pom.xml
+++ b/main/uber-jar/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>uber-jar</artifactId>
 	<name>Single über jar with all dependencies</name>
diff --git a/main/ui/pom.xml b/main/ui/pom.xml
index a2736f06f..b7a12ea50 100644
--- a/main/ui/pom.xml
+++ b/main/ui/pom.xml
@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>org.cryptomator</groupId>
 		<artifactId>main</artifactId>
-		<version>1.4.1</version>
+		<version>1.4.2</version>
 	</parent>
 	<artifactId>ui</artifactId>
 	<name>Cryptomator GUI</name>
diff --git a/main/ui/src/main/java/org/cryptomator/ui/model/WindowsDriveLetters.java b/main/ui/src/main/java/org/cryptomator/ui/model/WindowsDriveLetters.java
index 41b6799ba..4c2c3111e 100644
--- a/main/ui/src/main/java/org/cryptomator/ui/model/WindowsDriveLetters.java
+++ b/main/ui/src/main/java/org/cryptomator/ui/model/WindowsDriveLetters.java
@@ -22,11 +22,11 @@ import org.apache.commons.lang3.SystemUtils;
 @Singleton
 public final class WindowsDriveLetters {
 
-	private static final Set<Character> A_TO_Z;
+	private static final Set<Character> D_TO_Z;
 
 	static {
-		try (IntStream stream = IntStream.rangeClosed('A', 'Z')) {
-			A_TO_Z = stream.mapToObj(i -> (char) i).collect(Collectors.toSet());
+		try (IntStream stream = IntStream.rangeClosed('D', 'Z')) {
+			D_TO_Z = stream.mapToObj(i -> (char) i).collect(Collectors.toSet());
 		}
 	}
 
@@ -45,7 +45,7 @@ public final class WindowsDriveLetters {
 	public Set<Character> getAvailableDriveLetters() {
 		Set<Character> occupiedDriveLetters = getOccupiedDriveLetters();
 		Predicate<Character> isOccupiedDriveLetter = occupiedDriveLetters::contains;
-		return A_TO_Z.stream().filter(isOccupiedDriveLetter.negate()).collect(Collectors.toSet());
+		return D_TO_Z.stream().filter(isOccupiedDriveLetter.negate()).collect(Collectors.toSet());
 	}
 
 }