diff --git a/.travis.yml b/.travis.yml
index a765673..2babbf3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ language: php
 php:
   - 7.0
   - 7.1
+  - 7.2
 
 env:
   global:
@@ -24,6 +25,8 @@ env:
     - typo3DatabaseHost="127.0.0.1"
     - typo3DatabaseUsername="travis"
     - typo3DatabasePassword=""
+  matrix:
+    - TYPO3_VERSION="~7.6"
 
 matrix:
   fast_finish: true
diff --git a/Documentation/source/development/contribution.rst b/Documentation/source/development/contribution.rst
index c362c37..f65bb21 100644
--- a/Documentation/source/development/contribution.rst
+++ b/Documentation/source/development/contribution.rst
@@ -30,7 +30,7 @@ Then setup your system::
 
     git clone git@github.com:codappix/search_core.git \
         && cd search_core \
-        && export typo3DatabaseName="searchcoretest76" \
+        && export typo3DatabaseName="searchcoretest87" \
         && export TYPO3_VERSION="~8.7" \
         && make install \
         && make unitTests \
@@ -41,8 +41,8 @@ If all tests are okay, start your work.
 If you are working with multiple TYPO3 versions make sure to export `typo3DatabaseName` and
 `TYPO3_VERSION` in your environment like::
 
-    export typo3DatabaseName="searchcoretest62"
-    export TYPO3_VERSION="~6.2"
+    export typo3DatabaseName="searchcoretest76"
+    export TYPO3_VERSION="~7.6"
 
 Also run the install command for each version before running any tests. Only this will make sure you
 are testing against the actual TYPO3 Version and database scheme.
diff --git a/Makefile b/Makefile
index b8f4ac5..ac3d7d5 100644
--- a/Makefile
+++ b/Makefile
@@ -10,9 +10,18 @@ typo3DatabaseUsername ?= "dev"
 typo3DatabasePassword ?= "dev"
 typo3DatabaseHost ?= "127.0.0.1"
 
+sourceOrDist=--prefer-dist
+ifeq ($(TYPO3_VERSION),~7.6)
+	sourceOrDist=--prefer-source
+endif
+
 .PHONY: install
 install: clean
-	COMPOSER_PROCESS_TIMEOUT=1000 composer require -vv --dev --prefer-dist typo3/cms="$(TYPO3_VERSION)"
+	if [ $(TYPO3_VERSION) = ~7.6 ]; then \
+		patch composer.json Tests/InstallPatches/composer.json.patch; \
+	fi
+
+	COMPOSER_PROCESS_TIMEOUT=1000 composer require -vv --dev $(sourceOrDist) typo3/cms="$(TYPO3_VERSION)"
 	git checkout composer.json
 
 cgl:
diff --git a/Tests/Functional/Bootstrap.php b/Tests/Functional/Bootstrap.php
new file mode 100644
index 0000000..66b8eba
--- /dev/null
+++ b/Tests/Functional/Bootstrap.php
@@ -0,0 +1,9 @@
+<?php
+
+$filePath = '.Build/vendor/typo3/testing-framework/Resources/Core/Build/FunctionalTestsBootstrap.php';
+
+if (getenv('TYPO3_VERSION') === '~7.6') {
+    $filePath = '.Build/vendor/typo3/cms/typo3/sysext/core/Build/FunctionalTestsBootstrap.php';
+}
+
+require_once dirname(dirname(__DIR__)) . '/' . $filePath;
diff --git a/Tests/Functional/FunctionalTests.xml b/Tests/Functional/FunctionalTests.xml
index a318f65..e4f78fe 100644
--- a/Tests/Functional/FunctionalTests.xml
+++ b/Tests/Functional/FunctionalTests.xml
@@ -1,8 +1,7 @@
 <phpunit
     backupGlobals="true"
     backupStaticAttributes="false"
-    bootstrap="../../.Build/vendor/typo3/testing-framework/Resources/Core/Build/FunctionalTestsBootstrap.php"
-
+    bootstrap="Bootstrap.php"
     colors="true"
     convertErrorsToExceptions="false"
     convertWarningsToExceptions="false"
diff --git a/Tests/InstallPatches/composer.json.patch b/Tests/InstallPatches/composer.json.patch
new file mode 100644
index 0000000..6f11cdc
--- /dev/null
+++ b/Tests/InstallPatches/composer.json.patch
@@ -0,0 +1,14 @@
+diff --git a/composer.json b/composer.json
+index 83e5f47..e9fa296 100644
+--- a/composer.json
++++ b/composer.json
+@@ -21,8 +21,7 @@
+         "ruflin/elastica": "~3.2"
+     },
+     "require-dev": {
+-        "phpunit/phpunit": "~6.4.4",
+-        "typo3/testing-framework": "~1.1.5",
++        "phpunit/phpunit": "~5.7.0",
+         "squizlabs/php_codesniffer": "~3.1.1"
+     },
+     "config": {
diff --git a/Tests/Unit/Bootstrap.php b/Tests/Unit/Bootstrap.php
new file mode 100644
index 0000000..0f7b382
--- /dev/null
+++ b/Tests/Unit/Bootstrap.php
@@ -0,0 +1,9 @@
+<?php
+
+$filePath = '.Build/vendor/typo3/testing-framework/Resources/Core/Build/UnitTestsBootstrap.php';
+
+if (getenv('TYPO3_VERSION') === '~7.6') {
+    $filePath = '.Build/vendor/typo3/cms/typo3/sysext/core/Build/UnitTestsBootstrap.php';
+}
+
+require_once dirname(dirname(__DIR__)) . '/' . $filePath;
diff --git a/Tests/Unit/UnitTests.xml b/Tests/Unit/UnitTests.xml
index 6486594..d8285be 100644
--- a/Tests/Unit/UnitTests.xml
+++ b/Tests/Unit/UnitTests.xml
@@ -1,7 +1,7 @@
 <phpunit
     backupGlobals="false"
     backupStaticAttributes="false"
-    bootstrap="../../.Build/vendor/typo3/testing-framework/Resources/Core/Build/UnitTestsBootstrap.php"
+    bootstrap="Bootstrap.php"
 
     colors="true"
     convertErrorsToExceptions="false"
diff --git a/composer.json b/composer.json
index f58a062..83e5f47 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require": {
         "php": ">=7.0.0",
-        "typo3/cms": "~8.7",
+        "typo3/cms": ">= 7.6.0 < 9.0.0",
         "ruflin/elastica": "~3.2"
     },
     "require-dev": {
diff --git a/ext_emconf.php b/ext_emconf.php
index 4d342a5..7c3a087 100644
--- a/ext_emconf.php
+++ b/ext_emconf.php
@@ -7,8 +7,8 @@ $EM_CONF[$_EXTKEY] = [
     'clearCacheOnLoad' => 1,
     'constraints' => [
         'depends' => [
-            'typo3' => '8.7.0-8.7.99',
-            'php' => '7.1.0-7.99.99'
+            'typo3' => '7.6.0-8.7.99',
+            'php' => '7.0.0-7.2.99'
         ],
         'conflicts' => [],
     ],
@@ -18,7 +18,7 @@ $EM_CONF[$_EXTKEY] = [
         ],
     ],
     'state' => 'beta',
-    'version' => '1.0.0',
+    'version' => '0.0.1',
     'author' => 'Daniel Siepmann',
     'author_email' => 'coding@daniel-siepmann.de',
 ];
diff --git a/ext_localconf.php b/ext_localconf.php
index a713d0b..d4d7cef 100644
--- a/ext_localconf.php
+++ b/ext_localconf.php
@@ -37,17 +37,31 @@ call_user_func(
             ]
         );
 
+        // Register different concrete implementations, depending on current TYPO3 version.
+        // This way we can provide working implementations for multiple TYPO3 versions.
+        $container = \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\Object\Container\Container::class);
+        if (\TYPO3\CMS\Core\Utility\VersionNumberUtility::convertVersionNumberToInteger(TYPO3_version) >= 8000000) {
+            $container->registerImplementation(
+                \Codappix\SearchCore\Compatibility\TypoScriptServiceInterface::class,
+                \TYPO3\CMS\Core\TypoScript\TypoScriptService::class
+            );
+        } else {
+            $container->registerImplementation(
+                \Codappix\SearchCore\Compatibility\TypoScriptServiceInterface::class,
+                \TYPO3\CMS\Extbase\Service\TypoScriptService::class
+            );
+        }
+
         // API does make use of object manager, therefore use GLOBALS
         $extensionConfiguration = unserialize($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][$extensionKey]);
         if ($extensionConfiguration === false
             || !isset($extensionConfiguration['disable.']['elasticsearch'])
             || $extensionConfiguration['disable.']['elasticsearch'] !== '1'
         ) {
-            \TYPO3\CMS\Core\Utility\GeneralUtility::makeInstance(\TYPO3\CMS\Extbase\Object\Container\Container::class)
-                ->registerImplementation(
-                    \Codappix\SearchCore\Connection\ConnectionInterface::class,
-                    \Codappix\SearchCore\Connection\Elasticsearch::class
-                );
+            $container->registerImplementation(
+                \Codappix\SearchCore\Connection\ConnectionInterface::class,
+                \Codappix\SearchCore\Connection\Elasticsearch::class
+            );
         }
     },
     $_EXTKEY