diff --git a/pkgs/development/php-packages/redis/default.nix b/pkgs/development/php-packages/redis/default.nix
index 41ff8f38689..a61ae1194ff 100644
--- a/pkgs/development/php-packages/redis/default.nix
+++ b/pkgs/development/php-packages/redis/default.nix
@@ -7,8 +7,9 @@ buildPecl {
   sha256 = "1cfsbxf3q3im0cmalgk76jpz581zr92z03c1viy93jxb53k2vsgl";
 
   internalDeps = with php.extensions; [
-    json
     session
+  ] ++ lib.optionals (lib.versionOlder php.version "8.0") [
+    json
   ] ++ lib.optionals (lib.versionOlder php.version "7.4") [
     hash
   ];