diff --git a/composer.json b/composer.json
index 5be74c0e..0e600532 100644
--- a/composer.json
+++ b/composer.json
@@ -55,7 +55,7 @@
         "brick/math": "^0.9|^0.10|^0.11|^0.12",
         "paragonie/constant_time_encoding": "^2.6|^3.0",
         "paragonie/sodium_compat": "^1.20|^2.0",
-        "psr/cache": "^3.0",
+        "psr/cache": "^2.0|^3.0",
         "psr/clock": "^1.0",
         "psr/event-dispatcher": "^1.0",
         "psr/http-client": "^1.0",
diff --git a/src/Library/composer.json b/src/Library/composer.json
index fee12b47..5774ba23 100644
--- a/src/Library/composer.json
+++ b/src/Library/composer.json
@@ -44,7 +44,7 @@
         "brick/math": "^0.9|^0.10|^0.11|^0.12",
         "paragonie/constant_time_encoding": "^2.6|^3.0",
         "paragonie/sodium_compat": "^1.20|^2.0",
-        "psr/cache": "^3.0",
+        "psr/cache": "^2.0|^3.0",
         "psr/clock": "^1.0",
         "psr/http-factory": "^1.0",
         "psr/http-client": "^1.0",