Dhii · XedinUnknown · Mar 23, 2026 · Mar 21, 2026 · Mar 22, 2026 · Mar 22, 2026
diff --git a/.env.example b/.env.example
@@ -2,7 +2,8 @@ BASE_PATH=./
 BUILD_ROOT_PATH=/app/
 PROJECT_NAME=dhii_collections-interface
 
-PHP_BUILD_VERSION=7.4
-PHP_TEST_VERSION=7.4
+PHP_BUILD_VERSION=8.1
+PHP_TEST_VERSION=8.1
+XDEBUG_VERSION=3.4.7
 
-HOST_IP_ADDRESS=127.0.0.1
+HOST_IP_ADDRESS=host-gateway
diff --git a/.github/workflows/continuous-integration.yml b/.github/workflows/continuous-integration.yml
@@ -16,11 +16,10 @@ jobs:
     strategy:
       matrix:
         php-versions:
-          - '7.4'
-          - '8.0'
           - '8.1'
           - '8.2'
           - '8.3'
+          - '8.4'
 
     steps:
       - uses: actions/checkout@v2

diff --git a/.idea/collections-interface.iml b/.idea/collections-interface.iml
diff --git a/.idea/php-test-framework.xml b/.idea/php-test-framework.xml
diff --git a/.idea/php.xml b/.idea/php.xml
diff --git a/.idea/runConfigurations/Default.xml → .idea/runConfigurations/phpunit_xml_dist.xml b/.idea/runConfigurations/Default.xml → .idea/runConfigurations/phpunit_xml_dist.xml
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [[*next-version*]] - YYYY-MM-DD
+### Changed
+- Dropped support for PHP < 8.1 (#35).
+- Many interfaces now have generics (#35).
 
 ## [0.4.0-alpha2] - 2024-09-21
 ### Fixed

diff --git a/composer.json b/composer.json
@@ -16,13 +16,13 @@
     "minimum-stability": "dev",
     "prefer-stable": true,
     "require": {
-        "php": "^7.4 | ^8.0",
+        "php": "^8.1",
         "psr/container": "^1.0 | ^2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.0",
-        "slevomat/coding-standard": "^6.0",
-        "vimeo/psalm": "^4.6.2 | ^5.0"
+        "phpunit/phpunit": "^10.0",
+        "slevomat/coding-standard": "^8.0",
+        "vimeo/psalm": "^6.0"
     },
     "autoload": {
         "psr-4": {
-Original file line number
+Diff line change
@@ Expand Up / @@ -16,11 +16,10 @@ jobs: @@
         strategy:
           matrix:
             php-versions:
-              - '7.4'
-              - '8.0'
               - '8.1'
               - '8.2'
               - '8.3'
+              - '8.4'
         steps:
           - uses: actions/checkout@v2
@@ Expand Down @@