diff --git a/Cargo.lock b/Cargo.lock
index f140a143..a565029a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -404,7 +404,7 @@ dependencies = [
  "itertools",
  "lalrpop",
  "lalrpop-util",
- "multimap 0.9.0",
+ "multimap 0.9.1",
  "non-empty-vec",
  "regex",
  "serde",
@@ -3355,9 +3355,9 @@ dependencies = [
 
 [[package]]
 name = "multimap"
-version = "0.9.0"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70db9248a93dc36a36d9a47898caa007a32755c7ad140ec64eeeb50d5a730631"
+checksum = "e1a5d38b9b352dbd913288736af36af41c48d61b1a8cd34bcecd727561b7d511"
 dependencies = [
  "serde",
 ]
diff --git a/crates/air-lib/air-parser/Cargo.toml b/crates/air-lib/air-parser/Cargo.toml
index c3d7b7fb..f63d9c30 100644
--- a/crates/air-lib/air-parser/Cargo.toml
+++ b/crates/air-lib/air-parser/Cargo.toml
@@ -25,7 +25,7 @@ lalrpop-util = "0.20.0"
 regex = "1.10.2"
 codespan = "0.11.1"
 codespan-reporting = "0.11.1"
-multimap = "0.9.0"
+multimap = "0.9.1"
 
 # TODO: hide serde behind a feature
 serde = { version = "1.0.164", features = ["rc", "derive"] }