diff --git a/crates/languages/src/yaml/injections.scm b/crates/languages/src/yaml/injections.scm
index 9117c713b98fdd2896b13e4949a77c6489b9ee36..c9de25a18f8afb7d8e0c6874401798edede9bce1 100644
--- a/crates/languages/src/yaml/injections.scm
+++ b/crates/languages/src/yaml/injections.scm
@@ -1,3 +1,25 @@
 ((comment) @injection.content
  (#set! injection.language "comment")
 )
+
+; GitHub actions: JavaScript for workflow scripting (inline and block)
+(block_mapping
+  (block_mapping_pair
+    key: (flow_node) @_uses (#eq? @_uses "uses")
+    value: (flow_node) @_actions_ghs (#match? @_actions_ghs "^actions/github-script"))
+  (block_mapping_pair
+    key: (flow_node) @_with (#eq? @_with "with")
+    value: (block_node
+      (block_mapping
+        (block_mapping_pair
+          key: (flow_node) @_run (#eq? @_run "script")
+          value: [
+            (flow_node (plain_scalar (string_scalar) @injection.content))
+            (block_node (block_scalar) @injection.content)
+          ]
+          (#set! injection.language "javascript")
+        )
+      )
+    )
+  )
+)