diff --git a/lib/codegen/Cargo.toml b/lib/codegen/Cargo.toml
index c68710f358..43c073c721 100644
--- a/lib/codegen/Cargo.toml
+++ b/lib/codegen/Cargo.toml
@@ -14,7 +14,7 @@ build = "build.rs"
 cretonne-entity = { path = "../entity", version = "0.12.0", default-features = false }
 failure = { version = "0.1.1", default-features = false, features = ["derive"] }
 failure_derive = { version = "0.1.1", default-features = false }
-hashmap_core = { version = "0.1.7", optional = true }
+hashmap_core = { version = "0.1.8", optional = true }
 target-lexicon = { version = "0.0.2", default-features = false }
 # It is a goal of the cretonne-codegen crate to have minimal external dependencies.
 # Please don't add any unless they are essential to the task of creating binary
diff --git a/lib/module/Cargo.toml b/lib/module/Cargo.toml
index 41e2621a91..60a7a5d2b8 100644
--- a/lib/module/Cargo.toml
+++ b/lib/module/Cargo.toml
@@ -11,7 +11,7 @@ readme = "README.md"
 [dependencies]
 cretonne-codegen = { path = "../codegen", version = "0.12.0", default-features = false }
 cretonne-entity = { path = "../entity", version = "0.12.0", default-features = false }
-hashmap_core = { version = "0.1.7", optional = true }
+hashmap_core = { version = "0.1.8", optional = true }
 failure = "0.1.1"
 
 [features]
diff --git a/lib/wasm/Cargo.toml b/lib/wasm/Cargo.toml
index b57b944f68..00f0a772a5 100644
--- a/lib/wasm/Cargo.toml
+++ b/lib/wasm/Cargo.toml
@@ -12,7 +12,7 @@ keywords = ["webassembly", "wasm"]
 wasmparser = { version = "0.17.0", default-features = false }
 cretonne-codegen = { path = "../codegen", version = "0.12.0", default-features = false }
 cretonne-frontend = { path = "../frontend", version = "0.12.0", default-features = false }
-hashmap_core = { version = "0.1.7", optional = true }
+hashmap_core = { version = "0.1.8", optional = true }
 failure = { version = "0.1.1", default-features = false, features = ["derive"] }
 failure_derive = { version = "0.1.1", default-features = false }
 target-lexicon = { version = "0.0.2", default-features = false }