diff --git a/.github/workflows/integrate.yaml b/.github/workflows/integrate.yaml
index ead92afe..3e7b75e7 100644
--- a/.github/workflows/integrate.yaml
+++ b/.github/workflows/integrate.yaml
@@ -156,7 +156,7 @@ jobs:
 
     env:
       COMPOSER_NORMALIZE_PHAR: ".build/phar/composer-normalize.phar"
-      COMPOSER_VERSION: "2.5.1"
+      COMPOSER_VERSION: "2.5.5"
 
     steps:
       - name: "Checkout"
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index cb49a0f6..051e0601 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -24,7 +24,7 @@ jobs:
     env:
       COMPOSER_NORMALIZE_PHAR: ".build/phar/composer-normalize.phar"
       COMPOSER_NORMALIZE_PHAR_SIGNATURE: ".build/phar/composer-normalize.phar.asc"
-      COMPOSER_VERSION: "2.5.1"
+      COMPOSER_VERSION: "2.5.5"
       GPG_KEYS: ".build/phar/keys.asc"
       GPG_KEYS_ENCRYPTED: "phar/keys.asc.gpg"
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0467b126..83f6294a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,10 @@ For a full diff see [`2.30.2...main`][2.30.2...main].
 
 - Updated `schema.json` ([#1070]), by [@ergebnis-bot]
 
+### Fixed
+
+- Required `composer/composer:2.5.5` for compiling `composer-normalize.phar` ([#1094]), by [@localheinz]
+
 ## [`2.30.2`][2.30.2]
 
 For a full diff see [`2.30.1...2.30.2`][2.30.1...2.30.2].
@@ -1035,6 +1039,7 @@ For a full diff see [`81bc3a8...0.1.0`][81bc3a8...0.1.0].
 [#1060]: https://github.com/ergebnis/composer-normalize/pull/1060
 [#1062]: https://github.com/ergebnis/composer-normalize/pull/1062
 [#1070]: https://github.com/ergebnis/composer-normalize/pull/1070
+[#1094]: https://github.com/ergebnis/composer-normalize/pull/1094
 
 [@core23]: https://github.com/core23
 [@dependabot]: https://github.com/dependabot
diff --git a/Makefile b/Makefile
index 32162241..9adaa2a2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-COMPOSER_VERSION:=2.5.1
+COMPOSER_VERSION:=2.5.5
 
 .PHONY: it
 it: refactoring coding-standards security-analysis static-code-analysis tests ## Runs the refactoring, coding-standards, security-analysis, static-code-analysis, and tests targets
diff --git a/composer.json b/composer.json
index cd8ba157..31423486 100644
--- a/composer.json
+++ b/composer.json
@@ -32,7 +32,7 @@
     "localheinz/diff": "^1.1.1"
   },
   "require-dev": {
-    "composer/composer": "^2.5.1",
+    "composer/composer": "^2.5.5",
     "ergebnis/license": "^2.1.0",
     "ergebnis/php-cs-fixer-config": "^5.5.2",
     "fakerphp/faker": "^1.21.0",
diff --git a/composer.lock b/composer.lock
index 990955a8..17e294c0 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": "a2ae372e47a96a309128eb4ba3149abd",
+    "content-hash": "f34c9202294758a4ee6f2e62a4546475",
     "packages": [
         {
             "name": "ergebnis/json",
@@ -863,16 +863,16 @@
         },
         {
             "name": "composer/composer",
-            "version": "2.5.1",
+            "version": "2.5.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/composer.git",
-                "reference": "923278ad13e1621946eb76ab2882655d2cc396a4"
+                "reference": "c7cffaad16a60636a776017eac5bd8cd0095c32f"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/composer/zipball/923278ad13e1621946eb76ab2882655d2cc396a4",
-                "reference": "923278ad13e1621946eb76ab2882655d2cc396a4",
+                "url": "https://api.github.com/repos/composer/composer/zipball/c7cffaad16a60636a776017eac5bd8cd0095c32f",
+                "reference": "c7cffaad16a60636a776017eac5bd8cd0095c32f",
                 "shasum": ""
             },
             "require": {
@@ -956,7 +956,7 @@
             "support": {
                 "irc": "ircs://irc.libera.chat:6697/composer",
                 "issues": "https://github.com/composer/composer/issues",
-                "source": "https://github.com/composer/composer/tree/2.5.1"
+                "source": "https://github.com/composer/composer/tree/2.5.5"
             },
             "funding": [
                 {
@@ -972,7 +972,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2022-12-22T14:33:54+00:00"
+            "time": "2023-03-21T10:50:05+00:00"
         },
         {
             "name": "composer/metadata-minifier",