diff --git a/ruma-api-macros/Cargo.toml b/ruma-api-macros/Cargo.toml
index f97a00ed..f4d21feb 100644
--- a/ruma-api-macros/Cargo.toml
+++ b/ruma-api-macros/Cargo.toml
@@ -18,7 +18,7 @@ edition = "2018"
 proc-macro2 = "1.0.24"
 quote = "1.0.8"
 syn = { version = "1.0.57", features = ["full", "extra-traits"] }
-proc-macro-crate = "0.1.5"
+proc-macro-crate = "1.0.0"
 
 [lib]
 proc-macro = true
diff --git a/ruma-api-macros/src/util.rs b/ruma-api-macros/src/util.rs
index fa5312c8..050b2c1d 100644
--- a/ruma-api-macros/src/util.rs
+++ b/ruma-api-macros/src/util.rs
@@ -3,7 +3,7 @@
 use std::collections::BTreeSet;
 
 use proc_macro2::{Span, TokenStream};
-use proc_macro_crate::crate_name;
+use proc_macro_crate::{crate_name, FoundCrate};
 use quote::quote;
 use syn::{
     AngleBracketedGenericArguments, AttrStyle, Attribute, GenericArgument, Ident, Lifetime,
@@ -393,10 +393,10 @@ pub(crate) fn is_valid_endpoint_path(string: &str) -> bool {
 }
 
 pub fn import_ruma_api() -> TokenStream {
-    if let Ok(possibly_renamed) = crate_name("ruma-api") {
+    if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma-api") {
         let import = Ident::new(&possibly_renamed, Span::call_site());
         quote! { ::#import }
-    } else if let Ok(possibly_renamed) = crate_name("ruma") {
+    } else if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma") {
         let import = Ident::new(&possibly_renamed, Span::call_site());
         quote! { ::#import::api }
     } else {
diff --git a/ruma-events-macros/Cargo.toml b/ruma-events-macros/Cargo.toml
index ee7994de..e860cca2 100644
--- a/ruma-events-macros/Cargo.toml
+++ b/ruma-events-macros/Cargo.toml
@@ -19,7 +19,7 @@ version = "0.22.0-alpha.2"
 syn = { version = "1.0.57", features = ["full"] }
 quote = "1.0.8"
 proc-macro2 = "1.0.24"
-proc-macro-crate = "0.1.5"
+proc-macro-crate = "1.0.0"
 
 [lib]
 proc-macro = true
diff --git a/ruma-events-macros/src/lib.rs b/ruma-events-macros/src/lib.rs
index ed04ce01..19a01486 100644
--- a/ruma-events-macros/src/lib.rs
+++ b/ruma-events-macros/src/lib.rs
@@ -9,7 +9,7 @@
 
 use proc_macro::TokenStream;
 use proc_macro2 as pm2;
-use proc_macro_crate::crate_name;
+use proc_macro_crate::{crate_name, FoundCrate};
 use quote::quote;
 use syn::{parse_macro_input, DeriveInput, Ident};
 
@@ -125,10 +125,10 @@ pub fn derive_state_event(input: TokenStream) -> TokenStream {
 }
 
 pub(crate) fn import_ruma_events() -> pm2::TokenStream {
-    if let Ok(possibly_renamed) = crate_name("ruma-events") {
+    if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma-events") {
         let import = Ident::new(&possibly_renamed, pm2::Span::call_site());
         quote! { ::#import }
-    } else if let Ok(possibly_renamed) = crate_name("ruma") {
+    } else if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma") {
         let import = Ident::new(&possibly_renamed, pm2::Span::call_site());
         quote! { ::#import::events }
     } else {
diff --git a/ruma-serde-macros/Cargo.toml b/ruma-serde-macros/Cargo.toml
index 7e9773cb..6a93f385 100644
--- a/ruma-serde-macros/Cargo.toml
+++ b/ruma-serde-macros/Cargo.toml
@@ -14,7 +14,7 @@ edition = "2018"
 proc-macro = true
 
 [dependencies]
-proc-macro-crate = "0.1.5"
+proc-macro-crate = "1.0.0"
 proc-macro2 = "1.0.24"
 quote = "1.0.8"
 syn = { version = "1.0.55", features = ["full", "extra-traits"] }
diff --git a/ruma-serde-macros/src/util.rs b/ruma-serde-macros/src/util.rs
index 3b3a6c1c..8f6067d5 100644
--- a/ruma-serde-macros/src/util.rs
+++ b/ruma-serde-macros/src/util.rs
@@ -1,5 +1,5 @@
 use proc_macro2::{Ident, Span, TokenStream};
-use proc_macro_crate::crate_name;
+use proc_macro_crate::{crate_name, FoundCrate};
 use quote::quote;
 use syn::{ItemEnum, LitStr, Variant};
 
@@ -9,10 +9,10 @@ use crate::{
 };
 
 pub fn import_ruma_serde() -> TokenStream {
-    if let Ok(possibly_renamed) = crate_name("ruma-serde") {
+    if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma-serde") {
         let import = Ident::new(&possibly_renamed, Span::call_site());
         quote! { ::#import }
-    } else if let Ok(possibly_renamed) = crate_name("ruma") {
+    } else if let Ok(FoundCrate::Name(possibly_renamed)) = crate_name("ruma") {
         let import = Ident::new(&possibly_renamed, Span::call_site());
         quote! { ::#import::serde }
     } else {