diff --git a/.travis.yml b/.travis.yml
index 9b4a49ef..925d3669 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,7 +11,7 @@ matrix:
   - jdk: openjdk8
     env: TERM=dumb MOCK_MAKER=mock-maker-inline KOTLIN_VERSION=1.2.50
   - jdk: openjdk8
-    env: TERM=dumb MOCK_MAKER=mock-maker-inline KOTLIN_VERSION=1.3.40
+    env: TERM=dumb MOCK_MAKER=mock-maker-inline KOTLIN_VERSION=1.3.50
   - jdk: openjdk8
     env: TERM=dumb KOTLIN_VERSION=1.0.7
   - jdk: openjdk8
@@ -19,7 +19,7 @@ matrix:
   - jdk: openjdk8
     env: TERM=dumb KOTLIN_VERSION=1.2.50
   - jdk: openjdk8
-    env: TERM=dumb KOTLIN_VERSION=1.3.40
+    env: TERM=dumb KOTLIN_VERSION=1.3.50
 
 
 env:
diff --git a/README.md b/README.md
index 871611e8..d8087afe 100644
--- a/README.md
+++ b/README.md
@@ -34,3 +34,34 @@ fun doAction_doesSomething(){
 ```
 
 For more info and samples, see the [Wiki](https://github.com/nhaarman/mockito-kotlin/wiki).
+
+## Building
+
+Mockito-Kotlin is built with Gradle.
+
+ - `./gradlew build` builds the project
+ - `./gradlew publishToMavenLocal` installs the maven artifacts in your local repository
+ - `./gradlew assemble && ./gradlew test` runs the test suite (See Testing below)
+
+### Versioning
+
+Mockito-Kotlin roughly follows SEMVER; version names are parsed from 
+git tags using `git describe`.
+
+### Testing
+
+Mockito-Kotlin's test suite is located in a separate `tests` module,
+to allow running the tests using several Kotlin versions whilst still
+keeping the base module at a recent version.  
+
+Testing thus must be done in two stages: one to build the base artifact
+to test against, and the actual execution of the tests against the 
+built artifact:
+
+ - `./gradlew assemble` builds the base artifact
+ - `./gradlew test` runs the tests against the built artifact.
+
+Usually it is enough to test only using the default Kotlin versions; 
+CI will test against multiple versions.
+If you want to test using a different Kotlin version locally, set
+an environment variable `KOTLIN_VERSION` and run the tests.
diff --git a/mockito-kotlin/build.gradle b/mockito-kotlin/build.gradle
index 03f0515e..7f5bc362 100644
--- a/mockito-kotlin/build.gradle
+++ b/mockito-kotlin/build.gradle
@@ -3,7 +3,7 @@ apply from: '../publishing.gradle'
 apply plugin: 'org.jetbrains.dokka'
 
 buildscript {
-    ext.kotlin_version = "1.3.0"
+    ext.kotlin_version = "1.3.50"
 
     repositories {
         mavenCentral()
diff --git a/tests/build.gradle b/tests/build.gradle
index f3eafda4..cd11001b 100644
--- a/tests/build.gradle
+++ b/tests/build.gradle
@@ -1,6 +1,5 @@
 buildscript {
-    ext.kotlin_version = System.getenv("KOTLIN_VERSION") ?: '1.0.7'
-    ext.kotlin_version = '1.3.0'
+    ext.kotlin_version = System.getenv("KOTLIN_VERSION") ?: '1.3.50'
 
     repositories {
         mavenCentral()