diff --git a/.github/workflows/functionaltests.yml b/.github/workflows/functionaltests.yml
index 45d9527..bb09d97 100644
--- a/.github/workflows/functionaltests.yml
+++ b/.github/workflows/functionaltests.yml
@@ -1,50 +1,54 @@
 name: functionaltests
 
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 jobs:
-    unittests:
-        name: '[PHP ${{ matrix.php-versions }} | Flow ${{ matrix.flow-versions }}] Functional Tests'
-        runs-on: ubuntu-latest
-
-        strategy:
-            fail-fast: false
-            matrix:
-                php-versions: [7.2, 7.3, 7.4]
-                flow-versions: [6.3]
-
-        env:
-            APP_ENV: true
-            FLOW_CONTEXT: Testing/Functional
-            FLOW_DIST_FOLDER: flow-base-distribution
-
-        steps:
-            - uses: shivammathur/setup-php@v2
-              with:
-                  php-version: ${{ matrix.php-versions }}
-                  extensions:  mbstring, xml, json, zlib, iconv, intl, pdo_sqlite
-                  ini-values: opcache.fast_shutdown=0
-
-            - name: Cache composer dependencies
-              uses: actions/cache@v1
-              with:
-                  path: ~/.composer/cache
-                  key: php-${{ matrix.php-versions }}-flow-${{ matrix.flow-versions }}-composer-${{ hashFiles('composer.json') }}
-                  restore-keys: |
-                      php-${{ matrix.php-versions }}-flow-${{ matrix.flow-versions }}-composer-
-                      php-${{ matrix.php-versions }}-flow-
-            - name: Install composer dependencies
-              run: composer create-project neos/flow-base-distribution ${{ env.FLOW_DIST_FOLDER }} --prefer-dist --no-progress "^${{ matrix.flow-versions }}"
-
-            - name: Checkout code
-              uses: actions/checkout@v2
-              with:
-                  path: ${{ env.FLOW_DIST_FOLDER }}/DistributionPackages/Netlogix.Sentry
-
-            - name: Install netlogix/sentry
-              run: composer require netlogix/sentry:@dev
-              working-directory: ${{ env.FLOW_DIST_FOLDER }}
-
-            - name: Run tests
-              run: bin/phpunit -c DistributionPackages/Netlogix.Sentry/phpunit.xml.dist --testsuite="Functional" --bootstrap "Build/BuildEssentials/PhpUnit/FunctionalTestBootstrap.php"
-              working-directory: ${{ env.FLOW_DIST_FOLDER }}
+  unittests:
+    name: '[PHP ${{ matrix.php-version }} | Flow ${{ matrix.flow-version }}] Functional Tests'
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: [ 7.2, 7.3, 7.4 ]
+        flow-version: [ 6.3, 7.0 ]
+        exclude:
+          # Disable Flow 7.0 on PHP 7.2, as 7.3 is required
+          - php-version: 7.2
+            flow-version: 7.0
+
+    env:
+      APP_ENV: true
+      FLOW_CONTEXT: Testing/Functional
+      FLOW_DIST_FOLDER: flow-base-distribution
+
+    steps:
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: mbstring, xml, json, zlib, iconv, intl, pdo_sqlite
+          ini-values: opcache.fast_shutdown=0
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.composer/cache
+          key: php-${{ matrix.php-version }}-flow-${{ matrix.flow-version }}-composer-${{ hashFiles('composer.json') }}
+          restore-keys: |
+            php-${{ matrix.php-version }}-flow-${{ matrix.flow-version }}-composer-
+            php-${{ matrix.php-version }}-flow-
+      - name: Install composer dependencies
+        run: composer create-project neos/flow-base-distribution ${{ env.FLOW_DIST_FOLDER }} --prefer-dist --no-progress "^${{ matrix.flow-version }}"
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          path: ${{ env.FLOW_DIST_FOLDER }}/DistributionPackages/Netlogix.Sentry
+
+      - name: Install netlogix/sentry
+        run: composer require netlogix/sentry:@dev
+        working-directory: ${{ env.FLOW_DIST_FOLDER }}
+
+      - name: Run tests
+        run: bin/phpunit -c DistributionPackages/Netlogix.Sentry/phpunit.xml.dist --testsuite="Functional" --bootstrap "Build/BuildEssentials/PhpUnit/FunctionalTestBootstrap.php"
+        working-directory: ${{ env.FLOW_DIST_FOLDER }}
diff --git a/.github/workflows/unittests.yml b/.github/workflows/unittests.yml
index 8607b9d..77a6bff 100644
--- a/.github/workflows/unittests.yml
+++ b/.github/workflows/unittests.yml
@@ -1,50 +1,54 @@
 name: unittests
 
-on: [push, pull_request]
+on: [ push, pull_request ]
 
 jobs:
-    unittests:
-        name: '[PHP ${{ matrix.php-versions }} | Flow ${{ matrix.flow-versions }}] Unit Tests'
-        runs-on: ubuntu-latest
-
-        strategy:
-            fail-fast: false
-            matrix:
-                php-versions: [7.2, 7.3, 7.4]
-                flow-versions: [6.3]
-
-        env:
-            APP_ENV: true
-            FLOW_CONTEXT: Testing/Unit
-            FLOW_DIST_FOLDER: flow-base-distribution
-
-        steps:
-            - uses: shivammathur/setup-php@v2
-              with:
-                  php-version: ${{ matrix.php-versions }}
-                  extensions:  mbstring, xml, json, zlib, iconv, intl, pdo_sqlite
-                  ini-values: opcache.fast_shutdown=0
-
-            - name: Cache composer dependencies
-              uses: actions/cache@v1
-              with:
-                  path: ~/.composer/cache
-                  key: php-${{ matrix.php-versions }}-flow-${{ matrix.flow-versions }}-composer-${{ hashFiles('composer.json') }}
-                  restore-keys: |
-                      php-${{ matrix.php-versions }}-flow-${{ matrix.flow-versions }}-composer-
-                      php-${{ matrix.php-versions }}-flow-
-            - name: Install composer dependencies
-              run: composer create-project neos/flow-base-distribution ${{ env.FLOW_DIST_FOLDER }} --prefer-dist --no-progress "^${{ matrix.flow-versions }}"
-
-            - name: Checkout code
-              uses: actions/checkout@v2
-              with:
-                  path: ${{ env.FLOW_DIST_FOLDER }}/DistributionPackages/Netlogix.Sentry
-
-            - name: Install netlogix/sentry
-              run: composer require netlogix/sentry:@dev
-              working-directory: ${{ env.FLOW_DIST_FOLDER }}
-
-            - name: Run tests
-              run: bin/phpunit -c DistributionPackages/Netlogix.Sentry/phpunit.xml.dist --testsuite="Unit" --bootstrap "Build/BuildEssentials/PhpUnit/UnitTestBootstrap.php"
-              working-directory: ${{ env.FLOW_DIST_FOLDER }}
+  unittests:
+    name: '[PHP ${{ matrix.php-version }} | Flow ${{ matrix.flow-version }}] Unit Tests'
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        php-version: [ 7.2, 7.3, 7.4 ]
+        flow-version: [ 6.3, 7.0 ]
+        exclude:
+          # Disable Flow 7.0 on PHP 7.2, as 7.3 is required
+          - php-version: 7.2
+            flow-version: 7.0
+
+    env:
+      APP_ENV: true
+      FLOW_CONTEXT: Testing/Unit
+      FLOW_DIST_FOLDER: flow-base-distribution
+
+    steps:
+      - uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          extensions: mbstring, xml, json, zlib, iconv, intl, pdo_sqlite
+          ini-values: opcache.fast_shutdown=0
+
+      - name: Cache composer dependencies
+        uses: actions/cache@v1
+        with:
+          path: ~/.composer/cache
+          key: php-${{ matrix.php-version }}-flow-${{ matrix.flow-version }}-composer-${{ hashFiles('composer.json') }}
+          restore-keys: |
+            php-${{ matrix.php-version }}-flow-${{ matrix.flow-version }}-composer-
+            php-${{ matrix.php-version }}-flow-
+      - name: Install composer dependencies
+        run: composer create-project neos/flow-base-distribution ${{ env.FLOW_DIST_FOLDER }} --prefer-dist --no-progress "^${{ matrix.flow-version }}"
+
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          path: ${{ env.FLOW_DIST_FOLDER }}/DistributionPackages/Netlogix.Sentry
+
+      - name: Install netlogix/sentry
+        run: composer require netlogix/sentry:@dev
+        working-directory: ${{ env.FLOW_DIST_FOLDER }}
+
+      - name: Run tests
+        run: bin/phpunit -c DistributionPackages/Netlogix.Sentry/phpunit.xml.dist --testsuite="Unit" --bootstrap "Build/BuildEssentials/PhpUnit/UnitTestBootstrap.php"
+        working-directory: ${{ env.FLOW_DIST_FOLDER }}
diff --git a/Classes/ThrowableStorage/CompoundStorage.php b/Classes/ThrowableStorage/CompoundStorage.php
index da7543f..763cfa4 100644
--- a/Classes/ThrowableStorage/CompoundStorage.php
+++ b/Classes/ThrowableStorage/CompoundStorage.php
@@ -106,7 +106,7 @@ public function setBacktraceRenderer(\Closure $backtraceRenderer)
 
     private function createStorage(string $storageClassName): ThrowableStorageInterface
     {
-        assert($storageClassName instanceof ThrowableStorageInterface);
+        assert(is_a($storageClassName, ThrowableStorageInterface::class, true));
         $bootstrap = Bootstrap::$staticObjectManager->get(Bootstrap::class);
         $configurationManager = $bootstrap->getEarlyInstance(ConfigurationManager::class);
         $settings = $configurationManager->getConfiguration(ConfigurationManager::CONFIGURATION_TYPE_SETTINGS, 'Neos.Flow');
diff --git a/README.md b/README.md
index aa7e109..f589f68 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,7 @@ configure and extend this package to fit your needs.
 Currently the following Flow versions are supported:
 
 * `^6.3`
+* `^7.0`
 
 ## Setup
 
diff --git a/composer.json b/composer.json
index 6472cae..541d0a9 100644
--- a/composer.json
+++ b/composer.json
@@ -5,7 +5,7 @@
     "license": "MIT",
     "require": {
         "php": "^7.2",
-        "neos/flow": "^6.3",
+        "neos/flow": "^6.3 || ^7.0",
         "sentry/sdk": "^3.1"
     },
     "autoload": {