diff --git a/.github/actions/rust-toolchain@oldest-supported/action.yml b/.github/actions/rust-toolchain@oldest-supported/action.yml
index cbdfe382b..5bde7cf45 100644
--- a/.github/actions/rust-toolchain@oldest-supported/action.yml
+++ b/.github/actions/rust-toolchain@oldest-supported/action.yml
@@ -1,14 +1,12 @@
 name: Oldest Supported Rust Toolchain
 
-on:
-  workflow_call:
-    inputs:
-      targets:
-        description: Comma-separated list of target triples to install for this toolchain
-        required: false
-      components:
-        description: Comma-separated list of components to be additionally installed
-        required: false
+inputs:
+  targets:
+    description: Comma-separated list of target triples to install for this toolchain
+    required: false
+  components:
+    description: Comma-separated list of components to be additionally installed
+    required: false
 
 permissions:
   contents: read
diff --git a/.github/actions/rust-toolchain@stable/action.yml b/.github/actions/rust-toolchain@stable/action.yml
index 4da4e365d..e3d4bd0e5 100644
--- a/.github/actions/rust-toolchain@stable/action.yml
+++ b/.github/actions/rust-toolchain@stable/action.yml
@@ -1,14 +1,12 @@
 name: Stable Rust Toolchain
 
-on:
-  workflow_call:
-    inputs:
-      targets:
-        description: Comma-separated list of target triples to install for this toolchain
-        required: false
-      components:
-        description: Comma-separated list of components to be additionally installed
-        required: false
+inputs:
+  targets:
+    description: Comma-separated list of target triples to install for this toolchain
+    required: false
+  components:
+    description: Comma-separated list of components to be additionally installed
+    required: false
 
 permissions:
   contents: read