diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fbbba42..fed9acb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,10 +14,10 @@ jobs:
       max-parallel: 1
       matrix:
         container:
-          - "amaccis/php-libstemmer:8.2.31-3.1.0"
-          - "amaccis/php-libstemmer:8.3.31-3.1.0"
-          - "amaccis/php-libstemmer:8.4.21-3.1.0"
-          - "amaccis/php-libstemmer:8.5.6-3.1.0"
+          - "amaccis/php-libstemmer:8.2.32-3.1.1"
+          - "amaccis/php-libstemmer:8.3.32-3.1.1"
+          - "amaccis/php-libstemmer:8.4.23-3.1.1"
+          - "amaccis/php-libstemmer:8.5.8-3.1.1"
 
     container:
       image: ${{ matrix.container }}
diff --git a/composer.json b/composer.json
index f686ba0..825eeb9 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "amaccis/php-stemmer",
     "type": "library",
     "description": "A PHP interface to the Snowball stemming algorithms",
-    "version": "3.1.0",
+    "version": "3.1.1",
     "keywords": [
         "snowball",
         "stem",
diff --git a/composer.lock b/composer.lock
index 1466169..76f2a67 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "1f828a86ed840be110d0d2240c4fb00c",
+    "content-hash": "5a5e6743fc013b33d5bb8866a7a44161",
     "packages": [],
     "packages-dev": [
         {
@@ -69,20 +69,19 @@
         },
         {
             "name": "nikic/php-parser",
-            "version": "v5.7.0",
+            "version": "v5.8.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/nikic/PHP-Parser.git",
-                "reference": "dca41cd15c2ac9d055ad70dbfd011130757d1f82"
+                "reference": "044a6a392ff8ad0d61f14370a5fbbd0a0107152f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/dca41cd15c2ac9d055ad70dbfd011130757d1f82",
-                "reference": "dca41cd15c2ac9d055ad70dbfd011130757d1f82",
+                "url": "https://api.github.com/repos/nikic/PHP-Parser/zipball/044a6a392ff8ad0d61f14370a5fbbd0a0107152f",
+                "reference": "044a6a392ff8ad0d61f14370a5fbbd0a0107152f",
                 "shasum": ""
             },
             "require": {
-                "ext-ctype": "*",
                 "ext-json": "*",
                 "ext-tokenizer": "*",
                 "php": ">=7.4"
@@ -121,9 +120,9 @@
             ],
             "support": {
                 "issues": "https://github.com/nikic/PHP-Parser/issues",
-                "source": "https://github.com/nikic/PHP-Parser/tree/v5.7.0"
+                "source": "https://github.com/nikic/PHP-Parser/tree/v5.8.0"
             },
-            "time": "2025-12-06T11:56:16+00:00"
+            "time": "2026-07-04T14:30:18+00:00"
         },
         {
             "name": "phar-io/manifest",
@@ -245,11 +244,11 @@
         },
         {
             "name": "phpstan/phpstan",
-            "version": "2.1.55",
+            "version": "2.2.5",
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/9eaac3826ed5e9b8427350a43cac825eeca3f566",
-                "reference": "9eaac3826ed5e9b8427350a43cac825eeca3f566",
+                "url": "https://api.github.com/repos/phpstan/phpstan/zipball/909c1e5fef7989ac0d0c1c5c42e32a5c4f6198a0",
+                "reference": "909c1e5fef7989ac0d0c1c5c42e32a5c4f6198a0",
                 "shasum": ""
             },
             "require": {
@@ -272,6 +271,17 @@
             "license": [
                 "MIT"
             ],
+            "authors": [
+                {
+                    "name": "Ondřej Mirtes"
+                },
+                {
+                    "name": "Markus Staab"
+                },
+                {
+                    "name": "Vincent Langlet"
+                }
+            ],
             "description": "PHPStan - PHP Static Analysis Tool",
             "keywords": [
                 "dev",
@@ -294,7 +304,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2026-05-18T11:57:34+00:00"
+            "time": "2026-07-05T06:31:06+00:00"
         },
         {
             "name": "phpunit/php-code-coverage",
@@ -645,24 +655,24 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "11.5.55",
+            "version": "11.5.56",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "adc7262fccc12de2b30f12a8aa0b33775d814f00"
+                "reference": "5f83edffa6967c3db468d48a695ec7bcb02e9256"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/adc7262fccc12de2b30f12a8aa0b33775d814f00",
-                "reference": "adc7262fccc12de2b30f12a8aa0b33775d814f00",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/5f83edffa6967c3db468d48a695ec7bcb02e9256",
+                "reference": "5f83edffa6967c3db468d48a695ec7bcb02e9256",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
+                "ext-filter": "*",
                 "ext-json": "*",
                 "ext-libxml": "*",
                 "ext-mbstring": "*",
-                "ext-xml": "*",
                 "ext-xmlwriter": "*",
                 "myclabs/deep-copy": "^1.13.4",
                 "phar-io/manifest": "^2.0.4",
@@ -727,31 +737,15 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/11.5.55"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/11.5.56"
             },
             "funding": [
                 {
-                    "url": "https://phpunit.de/sponsors.html",
-                    "type": "custom"
-                },
-                {
-                    "url": "https://github.com/sebastianbergmann",
-                    "type": "github"
-                },
-                {
-                    "url": "https://liberapay.com/sebastianbergmann",
-                    "type": "liberapay"
-                },
-                {
-                    "url": "https://thanks.dev/u/gh/sebastianbergmann",
-                    "type": "thanks_dev"
-                },
-                {
-                    "url": "https://tidelift.com/funding/github/packagist/phpunit/phpunit",
-                    "type": "tidelift"
+                    "url": "https://phpunit.de/sponsoring.html",
+                    "type": "other"
                 }
             ],
-            "time": "2026-02-18T12:37:06+00:00"
+            "time": "2026-07-06T14:52:39+00:00"
         },
         {
             "name": "sebastian/cli-parser",