diff --git a/.flux/config.toml b/.flux/config.toml
new file mode 100644
index 00000000000..c4b44fb6aa6
--- /dev/null
+++ b/.flux/config.toml
@@ -0,0 +1,2 @@
+[cache]
+enabled = true
diff --git a/arch/cortex-m/Cargo.toml b/arch/cortex-m/Cargo.toml
index 4a3f51fed38..1e9fe8f61f2 100644
--- a/arch/cortex-m/Cargo.toml
+++ b/arch/cortex-m/Cargo.toml
@@ -10,7 +10,7 @@ edition.workspace = true
 
 [package.metadata.flux]
 enabled = true
-check_overflow = "lazy"
+check-overflow = "lazy"
 
 [dependencies]
 kernel = { path = "../../kernel" }
diff --git a/arch/rv32i/Cargo.toml b/arch/rv32i/Cargo.toml
index 073ba16f0fa..eaebb028c3e 100644
--- a/arch/rv32i/Cargo.toml
+++ b/arch/rv32i/Cargo.toml
@@ -19,7 +19,7 @@ flux-rs = { git  = "https://github.com/flux-rs/flux.git" }
 
 [package.metadata.flux]
 enabled = true
-check_overflow = "lazy"
+check-overflow = "lazy"
 
 [lints]
 workspace = true
diff --git a/flux.toml b/flux.toml
deleted file mode 100644
index 599e9fd8aeb..00000000000
--- a/flux.toml
+++ /dev/null
@@ -1 +0,0 @@
-cache = true
diff --git a/flux_support/Cargo.toml b/flux_support/Cargo.toml
index d1f2a1530d5..c9f24f9b9b7 100644
--- a/flux_support/Cargo.toml
+++ b/flux_support/Cargo.toml
@@ -6,7 +6,7 @@ edition.workspace = true
 
 [package.metadata.flux]
 enabled = true
-check_overflow = "lazy"
+check-overflow = "lazy"
 
 [dependencies]
 tock-registers = { path = "../libraries/tock-register-interface" }
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 6ed09524801..d50c01d3df4 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -10,7 +10,7 @@ edition.workspace = true
 
 [package.metadata.flux]
 enabled = true
-check_overflow = "lazy"
+check-overflow = "lazy"
 
 [dependencies]
 tock-registers = { path = "../libraries/tock-register-interface" }