diff --git a/php/composer.json b/php/composer.json
index 99162fdb..acdccfa7 100644
--- a/php/composer.json
+++ b/php/composer.json
@@ -9,13 +9,13 @@
         "ext-json": "*",
         "ext-sodium": "*",
         "ext-curl": "*",
-        "slim/slim": "4.*",
-        "php-di/slim-bridge": "3.*",
-        "guzzlehttp/guzzle": "7.*",
-        "guzzlehttp/psr7": "2.*",
-        "http-interop/http-factory-guzzle": "1.*",
-        "slim/twig-view": "3.*",
-        "slim/csrf": "1.*",
+        "slim/slim": "^4.11",
+        "php-di/slim-bridge": "^3.3",
+        "guzzlehttp/guzzle": "^7.5",
+        "guzzlehttp/psr7": "^2.4",
+        "http-interop/http-factory-guzzle": "^1.2",
+        "slim/twig-view": "^3.3",
+        "slim/csrf": "^1.3",
         "ext-apcu": "*"
     },
     "scripts": {