diff --git a/src/zvariant-derive/debian/patches/downgrade-proc-macro-crate.patch b/src/zvariant-derive/debian/patches/downgrade-proc-macro-crate.patch
deleted file mode 100644
index 3b37a1d..0000000
--- a/src/zvariant-derive/debian/patches/downgrade-proc-macro-crate.patch
+++ /dev/null
@@ -1,26 +0,0 @@
---- a/Cargo.toml
-+++ b/Cargo.toml
-@@ -26,7 +26,7 @@ resolver = "2"
- [lib]
- proc-macro = true
- [dependencies.proc-macro-crate]
--version = "1.0.0"
-+version = "0.1.4"
- 
- [dependencies.proc-macro2]
- version = "1.0"
---- a/src/utils.rs
-+++ b/src/utils.rs
-@@ -1,10 +1,10 @@
- use proc_macro2::TokenStream;
--use proc_macro_crate::{crate_name, FoundCrate};
-+use proc_macro_crate::crate_name;
- use quote::{format_ident, quote};
- use syn::{Attribute, Lit, Meta, Meta::List, MetaList, NestedMeta, Result};
- 
- pub fn zvariant_path() -> TokenStream {
--    if let Ok(FoundCrate::Name(name)) = crate_name("zvariant") {
-+    if let Ok(name) = crate_name("zvariant") {
-         let ident = format_ident!("{}", name);
-         quote! { ::#ident }
-     } else {
diff --git a/src/zvariant-derive/debian/patches/downgrade-syn.patch b/src/zvariant-derive/debian/patches/downgrade-syn.patch
deleted file mode 100644
index b457047..0000000
--- a/src/zvariant-derive/debian/patches/downgrade-syn.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- a/Cargo.toml
-+++ b/Cargo.toml
-@@ -34,7 +34,7 @@ version = "1.0"
- version = "1.0.3"
- 
- [dependencies.syn]
--version = "1.0.38"
-+version = "1.0.12"
- features = ["extra-traits", "full"]
- [dev-dependencies.byteorder]
- version = "1.3.1"
diff --git a/src/zvariant-derive/debian/patches/series b/src/zvariant-derive/debian/patches/series
index f592606..8e03e14 100644
--- a/src/zvariant-derive/debian/patches/series
+++ b/src/zvariant-derive/debian/patches/series
@@ -1,3 +1 @@
-downgrade-proc-macro-crate.patch
-downgrade-syn.patch
 relax-cargo-version.patch