diff --git a/docs/guides/examples/counter-dapp/counter-contract/Cargo.lock b/docs/guides/examples/counter-dapp/counter-contract/Cargo.lock
index 8a1501bf9..703013016 100644
--- a/docs/guides/examples/counter-dapp/counter-contract/Cargo.lock
+++ b/docs/guides/examples/counter-dapp/counter-contract/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
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 dependencies = [
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 [[package]]
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 [[package]]
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 [[package]]
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@@ -641,7 +641,7 @@ dependencies = [
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