diff --git a/proxmox-api-macro/Cargo.toml b/proxmox-api-macro/Cargo.toml
index 2eff89a9..7a21d4b2 100644
--- a/proxmox-api-macro/Cargo.toml
+++ b/proxmox-api-macro/Cargo.toml
@@ -10,9 +10,9 @@ proc-macro = true
 [dependencies]
 derive_builder = "0.7"
 failure = "0.1"
-proc-macro2 = "0.4"
-quote = "0.6"
-syn = { version = "0.15", features = [ "full" ] }
+proc-macro2 = "1.0"
+quote = "1.0"
+syn = { version = "1.0", features = [ "full" ] }
 
 [dev-dependencies]
 bytes = "0.4"
diff --git a/proxmox-api-macro/src/api_macro/enum_types.rs b/proxmox-api-macro/src/api_macro/enum_types.rs
index 68988a0f..1fe2ba64 100644
--- a/proxmox-api-macro/src/api_macro/enum_types.rs
+++ b/proxmox-api-macro/src/api_macro/enum_types.rs
@@ -9,7 +9,7 @@
 
 use std::mem;
 
-use proc_macro2::{Ident, Span, TokenStream};
+use proc_macro2::TokenStream;
 
 use failure::Error;
 use quote::quote_spanned;
@@ -26,8 +26,8 @@ where
 {
     let cap = attrs.len();
     for attr in mem::replace(attrs, Vec::with_capacity(cap)) {
-        if attr.path.is_ident(Ident::new("api", Span::call_site())) {
-            let attrs: util::ApiAttr = syn::parse2(attr.tts)?;
+        if attr.path.get_ident().map(|i| i == "api").unwrap_or(false) {
+            let attrs: util::ApiAttr = syn::parse2(attr.tokens)?;
 
             for attr in attrs.items {
                 func(attr)?;
diff --git a/proxmox-api-macro/src/api_macro/function.rs b/proxmox-api-macro/src/api_macro/function.rs
index f1cdcc3d..4d8a30e7 100644
--- a/proxmox-api-macro/src/api_macro/function.rs
+++ b/proxmox-api-macro/src/api_macro/function.rs
@@ -14,9 +14,9 @@ pub fn handle_function(
     mut definition: Object,
     mut item: syn::ItemFn,
 ) -> Result<TokenStream, Error> {
-    if item.decl.generics.lt_token.is_some() {
+    if item.sig.generics.lt_token.is_some() {
         c_bail!(
-            item.decl.generics.span(),
+            item.sig.generics.span(),
             "cannot use generic functions for api macros currently",
         );
         // Not until we stabilize our generated representation!
@@ -64,16 +64,16 @@ pub fn handle_function(
     let mut parameter_verifiers = TokenStream::new();
 
     let vis = std::mem::replace(&mut item.vis, syn::Visibility::Inherited);
-    let span = item.ident.span();
-    let name_str = item.ident.to_string();
+    let span = item.sig.ident.span();
+    let name_str = item.sig.ident.to_string();
     //let impl_str = format!("{}_impl", name_str);
     //let impl_ident = Ident::new(&impl_str, span);
     let impl_checked_str = format!("{}_checked_impl", name_str);
     let impl_checked_ident = Ident::new(&impl_checked_str, span);
     let impl_unchecked_str = format!("{}_unchecked_impl", name_str);
     let impl_unchecked_ident = Ident::new(&impl_unchecked_str, span);
-    let name = std::mem::replace(&mut item.ident, impl_unchecked_ident.clone());
-    let mut return_type = match item.decl.output {
+    let name = std::mem::replace(&mut item.sig.ident, impl_unchecked_ident.clone());
+    let mut return_type = match item.sig.output {
         syn::ReturnType::Default => syn::Type::Tuple(syn::TypeTuple {
             paren_token: syn::token::Paren {
                 span: Span::call_site(),
@@ -87,15 +87,15 @@ pub fn handle_function(
     let mut passed_args = syn::punctuated::Punctuated::<Ident, Token![,]>::new();
     let mut arg_extraction = Vec::new();
 
-    let inputs = item.decl.inputs.clone();
-    for arg in item.decl.inputs.iter() {
+    let inputs = item.sig.inputs.clone();
+    for arg in item.sig.inputs.iter() {
         let arg = match arg {
-            syn::FnArg::Captured(ref arg) => arg,
+            syn::FnArg::Typed(ref arg) => arg,
             other => bail!("unhandled type of method parameter ({:?})", other),
         };
 
         let arg_type = &arg.ty;
-        let name = match &arg.pat {
+        let name = match &*arg.pat {
             syn::Pat::Ident(name) => &name.ident,
             other => bail!("invalid kind of parameter pattern: {:?}", other),
         };
@@ -239,7 +239,7 @@ pub fn handle_function(
         }
     });
 
-    if item.asyncness.is_some() {
+    if item.sig.asyncness.is_some() {
         // An async function is expected to return its value, so we wrap it a bit:
         body.push(quote! {
             impl #struct_name {
@@ -270,8 +270,8 @@ pub fn handle_function(
         });
     } else {
         // Non async fn must return an ApiFuture already!
-        return_type = syn::Type::Verbatim(syn::TypeVerbatim {
-            tts: definition
+        return_type = syn::Type::Verbatim(
+            definition
                 .remove("returns")
                 .ok_or_else(|| {
                     format_err!(
@@ -281,7 +281,7 @@ pub fn handle_function(
                 })?
                 .expect_type()?
                 .into_token_stream(),
-        });
+        );
 
         body.push(quote! {
             impl #struct_name {
diff --git a/proxmox-api-macro/src/api_macro/struct_types/newtype.rs b/proxmox-api-macro/src/api_macro/struct_types/newtype.rs
index 3b174447..bd84df21 100644
--- a/proxmox-api-macro/src/api_macro/struct_types/newtype.rs
+++ b/proxmox-api-macro/src/api_macro/struct_types/newtype.rs
@@ -24,8 +24,7 @@ pub fn handle_newtype(
     let type_str = syn::LitStr::new(&type_s, type_span);
 
     let fields = &item.unnamed;
-    let field_punct = fields.first().unwrap();
-    let field = field_punct.value();
+    let field = fields.first().unwrap();
 
     let common = CommonTypeDefinition::from_object(&mut definition)?;
 
@@ -141,7 +140,7 @@ fn newtype_filter_derive_attrs(
             continue;
         }
 
-        let mut content: syn::Expr = syn::parse2(attr.tts)?;
+        let mut content: syn::Expr = syn::parse2(attr.tokens)?;
         if let syn::Expr::Tuple(ref mut exprtuple) = content {
             for ty in mem::replace(&mut exprtuple.elems, syn::punctuated::Punctuated::new()) {
                 if let syn::Expr::Path(ref exprpath) = ty {
@@ -166,7 +165,7 @@ fn newtype_filter_derive_attrs(
                 exprtuple.elems.push(ty);
             }
         }
-        attr.tts = quote! { #content };
+        attr.tokens = quote! { #content };
         attrs.push(attr);
     }
 
diff --git a/proxmox-api-macro/src/parsing.rs b/proxmox-api-macro/src/parsing.rs
index 04738a58..41ac9ebc 100644
--- a/proxmox-api-macro/src/parsing.rs
+++ b/proxmox-api-macro/src/parsing.rs
@@ -298,7 +298,7 @@ impl Expression {
     pub fn is_ident(&self, ident: &str) -> bool {
         match self {
             Expression::Expr(expr) => match expr {
-                Expr::Path(path) => path.path.is_ident(Ident::new(ident, Span::call_site())),
+                Expr::Path(path) => path.path.get_ident().map(|i| i == ident).unwrap_or(false),
                 _ => false,
             },
             _ => false,