diff --git a/Makefile b/Makefile
index 5f453f80..40623621 100644
--- a/Makefile
+++ b/Makefile
@@ -4,7 +4,7 @@ CARGO_HACK_ARGS=--feature-powerset --exclude-features default --group-features b
 
 CARGO_DOC_ARGS?=--open
 
-XDRGEN_VERSION=ac1653599b97b298e72c0186b5685bffa120b6aa
+XDRGEN_VERSION=691341a1958278b906a191044072e1f2ad29a8ce
 # XDRGEN_LOCAL=1
 XDRGEN_TYPES_CUSTOM_STR_IMPL_CURR=PublicKey,AccountId,MuxedAccount,MuxedAccountMed25519,SignerKey,SignerKeyEd25519SignedPayload,NodeId,ScAddress,AssetCode,AssetCode4,AssetCode12,ClaimableBalanceId
 XDRGEN_TYPES_CUSTOM_STR_IMPL_NEXT=PublicKey,AccountId,MuxedAccount,MuxedAccountMed25519,SignerKey,SignerKeyEd25519SignedPayload,NodeId,ScAddress,AssetCode,AssetCode4,AssetCode12,ClaimableBalanceId