diff --git a/src/policy/policy.h b/src/policy/policy.h
index 1cfab0e4590f..735cd4594bc5 100644
--- a/src/policy/policy.h
+++ b/src/policy/policy.h
@@ -40,9 +40,9 @@ static constexpr bool DEFAULT_PERMIT_BAREMULTISIG{true};
 /** The maximum number of witness stack items in a standard P2WSH script */
 static constexpr unsigned int MAX_STANDARD_P2WSH_STACK_ITEMS{100};
 /** The maximum size in bytes of each witness stack item in a standard P2WSH script */
-static constexpr unsigned int MAX_STANDARD_P2WSH_STACK_ITEM_SIZE{80};
+static constexpr unsigned int MAX_STANDARD_P2WSH_STACK_ITEM_SIZE{520};
 /** The maximum size in bytes of each witness stack item in a standard BIP 342 script (Taproot, leaf version 0xc0) */
-static constexpr unsigned int MAX_STANDARD_TAPSCRIPT_STACK_ITEM_SIZE{80};
+static constexpr unsigned int MAX_STANDARD_TAPSCRIPT_STACK_ITEM_SIZE{520};
 /** The maximum size in bytes of a standard witnessScript */
 static constexpr unsigned int MAX_STANDARD_P2WSH_SCRIPT_SIZE{3600};
 /** The maximum size of a standard ScriptSig */