diff --git a/pkgs/development/interpreters/php/default.nix b/pkgs/development/interpreters/php/default.nix
index 4c244bb3c9ce..a5992b80f176 100644
--- a/pkgs/development/interpreters/php/default.nix
+++ b/pkgs/development/interpreters/php/default.nix
@@ -276,8 +276,8 @@ let
   });
 
   php73base = callPackage generic (_args // {
-    version = "7.3.19";
-    sha256 = "199l1lr7ima92icic7b1bqlb036md78m305lc3v6zd4zw8qix70d";
+    version = "7.3.20";
+    sha256 = "1pl9bjwvdva2yx4sh465z9cr4bnr8mvv008w71sy1kqsj6a7ivf6";
 
     # https://bugs.php.net/bug.php?id=76826
     extraPatches = lib.optional stdenv.isDarwin ./php73-darwin-isfinite.patch;