diff --git a/Cargo.lock b/Cargo.lock
index 78f7bdee..fedeb762 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1125,9 +1125,9 @@ checksum = "dc375e1527247fe1a97d8b7156678dfe7c1af2fc075c9a4db3690ecd2a148068"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.54"
+version = "1.0.66"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e472a104799c74b514a57226160104aa483546de37e839ec50e3c2e41dd87534"
+checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9"
 dependencies = [
  "unicode-ident",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 2eb10bb4..d60ca86e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -12,6 +12,7 @@ default-members = [
     "pineappl_capi",
     "pineappl_cli",
 ]
+resolver = "2"
 
 [workspace.package]
 categories = ["science"]