diff --git a/.changeset/cyan-forks-rest.md b/.changeset/cyan-forks-rest.md
new file mode 100644
index 000000000..172f95297
--- /dev/null
+++ b/.changeset/cyan-forks-rest.md
@@ -0,0 +1,5 @@
+---
+"@onflow/sdk": patch
+---
+
+Use keyID from signatures
diff --git a/packages/sdk/src/resolve/resolve-signatures.js b/packages/sdk/src/resolve/resolve-signatures.js
index f6d37836c..e5131f5f0 100644
--- a/packages/sdk/src/resolve/resolve-signatures.js
+++ b/packages/sdk/src/resolve/resolve-signatures.js
@@ -39,9 +39,12 @@ function fetchSignature(ix, payload) {
   return async function innerFetchSignature(id) {
     const acct = ix.accounts[id]
     if (acct.signature != null) return
-    const {signature} = await acct.signingFunction(
+    const { signature, keyId } = await acct.signingFunction(
       buildSignable(acct, payload, ix)
     )
+    if (!acct.role.proposer) {
+      ix.accounts[id].keyId = keyId
+    }
     ix.accounts[id].signature = signature
   }
 }