diff --git a/cranelift/codegen/Cargo.toml b/cranelift/codegen/Cargo.toml
index 9f5a5fcdd6..6e3e251442 100644
--- a/cranelift/codegen/Cargo.toml
+++ b/cranelift/codegen/Cargo.toml
@@ -36,7 +36,7 @@ criterion = "0.3"
 [build-dependencies]
 cranelift-codegen-meta = { path = "meta", version = "0.78.0" }
 isle = { path = "../isle/isle", version = "0.78.0", optional = true }
-miette = { version = "3", features = ["fancy"] }
+miette = { version = "3", features = ["fancy"], optional = true }
 sha2 = "0.9.8"
 
 [features]
@@ -91,7 +91,7 @@ regalloc-snapshot = ["bincode", "regalloc/enable-serde"]
 souper-harvest = ["souper-ir", "souper-ir/stringify"]
 
 # Recompile ISLE DSL source files into their generated Rust code.
-rebuild-isle = ["isle", "cranelift-codegen-meta/rebuild-isle"]
+rebuild-isle = ["isle", "miette", "cranelift-codegen-meta/rebuild-isle"]
 
 # A hack to skip the ISLE-rebuild logic when testing for determinism
 # with the "Meta deterministic check" CI job.