diff --git a/.changeset/nervous-fans-arrive.md b/.changeset/nervous-fans-arrive.md
new file mode 100644
index 00000000..f0587bfc
--- /dev/null
+++ b/.changeset/nervous-fans-arrive.md
@@ -0,0 +1,5 @@
+---
+"@balancer/sdk": patch
+---
+
+fix: update sonic multicall3 creation blocknumber
diff --git a/.changeset/sharp-ligers-carry.md b/.changeset/sharp-ligers-carry.md
new file mode 100644
index 00000000..0d2595ad
--- /dev/null
+++ b/.changeset/sharp-ligers-carry.md
@@ -0,0 +1,5 @@
+---
+"@balancer/sdk": patch
+---
+
+fix: override multicall3 for sonic in viem chain definition