diff --git a/Cargo.lock b/Cargo.lock
index 53c42e08774b5..c4673041cb685 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1252,6 +1252,12 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fea41bba32d969b513997752735605054bc0dfa92b4c56bf1189f2e174be7a10"
 
+[[package]]
+name = "downcast-rs"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ea835d29036a4087793836fa931b08837ad5e957da9e23886b29586fb9b6650"
+
 [[package]]
 name = "dyn-clonable"
 version = "0.9.0"
@@ -9984,10 +9990,11 @@ dependencies = [
 
 [[package]]
 name = "wasmi"
-version = "0.6.2"
+version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bf617d864d25af3587aa745529f7aaa541066c876d57e050c0d0c85c61c92aff"
+checksum = "4bb6825d9b2147105789adb4c2d84b9b568719713f3ac39618b637b4dafc86c4"
 dependencies = [
+ "downcast-rs",
  "errno",
  "libc",
  "memory_units",
diff --git a/client/executor/Cargo.toml b/client/executor/Cargo.toml
index c5ce4b86e12f5..56341bf085393 100644
--- a/client/executor/Cargo.toml
+++ b/client/executor/Cargo.toml
@@ -23,7 +23,7 @@ sp-trie = { version = "2.0.0", path = "../../primitives/trie" }
 sp-serializer = { version = "2.0.0", path = "../../primitives/serializer" }
 sp-version = { version = "2.0.0", path = "../../primitives/version" }
 sp-panic-handler = { version = "2.0.0", path = "../../primitives/panic-handler" }
-wasmi = "0.6.2"
+wasmi = "0.7.0"
 parity-wasm = "0.41.0"
 lazy_static = "1.4.0"
 sp-api = { version = "2.0.0", path = "../../primitives/api" }
diff --git a/client/executor/common/Cargo.toml b/client/executor/common/Cargo.toml
index 8501144a9a989..3eb71d281ae47 100644
--- a/client/executor/common/Cargo.toml
+++ b/client/executor/common/Cargo.toml
@@ -17,7 +17,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 derive_more = "0.99.2"
 parity-wasm = "0.41.0"
 codec = { package = "parity-scale-codec", version = "1.3.4" }
-wasmi = "0.6.2"
+wasmi = "0.7.0"
 sp-core = { version = "2.0.0", path = "../../../primitives/core" }
 sp-allocator = { version = "2.0.0", path = "../../../primitives/allocator" }
 sp-wasm-interface = { version = "2.0.0", path = "../../../primitives/wasm-interface" }
diff --git a/client/executor/wasmi/Cargo.toml b/client/executor/wasmi/Cargo.toml
index bf174bca2d466..d3f47140adafd 100644
--- a/client/executor/wasmi/Cargo.toml
+++ b/client/executor/wasmi/Cargo.toml
@@ -15,7 +15,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
 log = "0.4.8"
-wasmi = "0.6.2"
+wasmi = "0.7.0"
 codec = { package = "parity-scale-codec", version = "1.3.4" }
 sc-executor-common = { version = "0.8.0", path = "../common" }
 sp-wasm-interface = { version = "2.0.0", path = "../../../primitives/wasm-interface" }
diff --git a/primitives/core/Cargo.toml b/primitives/core/Cargo.toml
index d59bbad09e50b..398da3c87d0da 100644
--- a/primitives/core/Cargo.toml
+++ b/primitives/core/Cargo.toml
@@ -20,7 +20,7 @@ serde = { version = "1.0.101", optional = true, features = ["derive"] }
 byteorder = { version = "1.3.2", default-features = false }
 primitive-types = { version = "0.7.0", default-features = false, features = ["codec"] }
 impl-serde = { version = "0.3.0", optional = true }
-wasmi = { version = "0.6.2", optional = true }
+wasmi = { version = "0.7.0", optional = true }
 hash-db = { version = "0.15.2", default-features = false }
 hash256-std-hasher = { version = "0.15.2", default-features = false }
 base58 = { version = "0.1.0", optional = true }
diff --git a/primitives/sandbox/Cargo.toml b/primitives/sandbox/Cargo.toml
old mode 100755
new mode 100644
index 70ae56fb48108..b35a74fc8fd02
--- a/primitives/sandbox/Cargo.toml
+++ b/primitives/sandbox/Cargo.toml
@@ -13,7 +13,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-wasmi = { version = "0.6.2", optional = true }
+wasmi = { version = "0.7.0", optional = true }
 sp-core = { version = "2.0.0", default-features = false, path = "../core" }
 sp-std = { version = "2.0.0", default-features = false, path = "../std" }
 sp-io = { version = "2.0.0", default-features = false, path = "../io" }
diff --git a/primitives/wasm-interface/Cargo.toml b/primitives/wasm-interface/Cargo.toml
index a85b6cd1d118a..620cda9de8787 100644
--- a/primitives/wasm-interface/Cargo.toml
+++ b/primitives/wasm-interface/Cargo.toml
@@ -14,7 +14,7 @@ readme = "README.md"
 targets = ["x86_64-unknown-linux-gnu"]
 
 [dependencies]
-wasmi = { version = "0.6.2", optional = true }
+wasmi = { version = "0.7.0", optional = true }
 impl-trait-for-tuples = "0.1.2"
 sp-std = { version = "2.0.0", path = "../std", default-features = false }
 codec = { package = "parity-scale-codec", version = "1.3.1", default-features = false, features = ["derive"] }