diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 8296c38..4376208 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5]
+        php: [7.2, 7.3, 7.4, 8.0, 8.1, 8.2, 8.3, 8.4, 8.5]
 
     name: PHP:${{ matrix.php }}
 
diff --git a/composer.json b/composer.json
index 68fcc4e..3c3592b 100644
--- a/composer.json
+++ b/composer.json
@@ -13,10 +13,10 @@
         }
     ],
     "require": {
-        "php": ">=7.1.0"
+        "php": ">=7.2.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8|^5.5|^6.5|^7.5|^8.5.52|^9.4"
+        "phpunit/phpunit": "^8.5.52|^9.4"
     },
     "autoload": {
         "psr-4": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 6d682eb..efea50a 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -6,5 +6,5 @@ parameters:
         - tests
 
     # Analyse against the library's minimum supported PHP version so
-    # syntax/feature regressions against the 7.1 floor are caught.
-    phpVersion: 70100
+    # syntax/feature regressions against the 7.2 floor are caught.
+    phpVersion: 70200