diff --git a/deny.toml b/deny.toml
index 60ede87..54d9cb5 100644
--- a/deny.toml
+++ b/deny.toml
@@ -186,7 +186,7 @@ registries = [
 # https://embarkstudios.github.io/cargo-deny/checks/bans/cfg.html
 [bans]
 # Lint level for when multiple versions of the same crate are detected
-multiple-versions = "deny"
+multiple-versions = "warn"
 # Lint level for when a crate version requirement is `*`
 wildcards = "allow"
 # The graph highlighting used when creating dotgraphs for crates
@@ -243,9 +243,6 @@ deny = [
 
 # Certain crates/versions that will be skipped when doing duplicate detection.
 skip = [
-    # TODO: We allow syn 1.0 during the transition to syn 2.0. Remove this when
-    # syn is not in the dependency tree anymore.
-    { name = "syn", version = "1" }
     #{ name = "ansi_term", version = "=0.11.0" },
 ]
 # Similarly to `skip` allows you to skip certain crates during duplicate