diff --git a/libcnb-data/Cargo.toml b/libcnb-data/Cargo.toml
index 192ef024..cdcfbc8a 100644
--- a/libcnb-data/Cargo.toml
+++ b/libcnb-data/Cargo.toml
@@ -12,7 +12,7 @@ readme = "README.md"
 include = ["src/**/*", "LICENSE", "README.md"]
 
 [dependencies]
-fancy-regex = { version = "0.12.0", default-features = false }
+fancy-regex = { version = "0.12.0", default-features = false, features = ["std"] }
 libcnb-proc-macros.workspace = true
 serde = { version = "1.0.188", features = ["derive"] }
 thiserror = "1.0.48"
diff --git a/libcnb-proc-macros/Cargo.toml b/libcnb-proc-macros/Cargo.toml
index dd2a3097..ba400f55 100644
--- a/libcnb-proc-macros/Cargo.toml
+++ b/libcnb-proc-macros/Cargo.toml
@@ -15,6 +15,6 @@ proc-macro = true
 
 [dependencies]
 cargo_metadata = "0.18.0"
-fancy-regex = { version = "0.12.0", default-features = false }
+fancy-regex = { version = "0.12.0", default-features = false, features = ["std"] }
 quote = "1.0.33"
 syn = { version = "2.0.37", features = ["full"] }