diff --git a/Cargo.lock b/Cargo.lock
index 138db21439..7e22a7d85a 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -340,7 +340,7 @@ dependencies = [
  "souper-ir",
  "target-lexicon",
  "thiserror",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -542,7 +542,7 @@ dependencies = [
  "smallvec",
  "target-lexicon",
  "thiserror",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wat",
 ]
 
@@ -1090,7 +1090,7 @@ dependencies = [
  "smallvec",
  "thiserror",
  "typemap",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wat",
 ]
 
@@ -1263,7 +1263,7 @@ dependencies = [
  "peepmatic-test-operator",
  "peepmatic-traits",
  "serde",
- "wast 26.0.1",
+ "wast 27.0.0",
  "z3",
 ]
 
@@ -1291,7 +1291,7 @@ dependencies = [
  "peepmatic-traits",
  "rand",
  "serde",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -1316,7 +1316,7 @@ dependencies = [
  "serde",
  "serde_test",
  "thiserror",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -1328,7 +1328,7 @@ dependencies = [
  "peepmatic",
  "peepmatic-test-operator",
  "souper-ir",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -1349,7 +1349,7 @@ version = "0.68.0"
 dependencies = [
  "peepmatic-traits",
  "serde",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -2203,9 +2203,9 @@ dependencies = [
 
 [[package]]
 name = "wasm-smith"
-version = "0.1.9"
+version = "0.1.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f372c777fcc75bbad237aa0b14e380cfddb3680f42c0584f1f0681542f8559b7"
+checksum = "bd5e4720bb44dc5e46a917139dc9dfa4bb6fee023bf9f77d2c55ec12eeaf9930"
 dependencies = [
  "arbitrary",
  "leb128",
@@ -2219,18 +2219,18 @@ checksum = "32fddd575d477c6e9702484139cf9f23dcd554b06d185ed0f56c857dd3a47aa6"
 
 [[package]]
 name = "wasmparser"
-version = "0.65.0"
+version = "0.66.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87cc2fe6350834b4e528ba0901e7aa405d78b89dc1fa3145359eb4de0e323fcf"
+checksum = "c97fc0456d6d09ca7b64bc33c34f4e8f29d5ccfa8e5595ef7a8957818339e6f6"
 
 [[package]]
 name = "wasmprinter"
-version = "0.2.12"
+version = "0.2.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0fe87e79ad307dc73cb7caca2b57d049d2905c7db1317a9c21171e69aa9f93d3"
+checksum = "9b580bee9eb1f029fac6014620b31f82ea2afa22d0701b9bd7f879747e3f5242"
 dependencies = [
  "anyhow",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
 ]
 
 [[package]]
@@ -2250,7 +2250,7 @@ dependencies = [
  "smallvec",
  "target-lexicon",
  "tempfile",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmtime-cache",
  "wasmtime-environ",
  "wasmtime-jit",
@@ -2328,7 +2328,7 @@ dependencies = [
  "test-programs",
  "tracing-subscriber",
  "wasi-common",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmtime",
  "wasmtime-cache",
  "wasmtime-debug",
@@ -2363,7 +2363,7 @@ dependencies = [
  "object",
  "target-lexicon",
  "thiserror",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmtime-environ",
 ]
 
@@ -2382,7 +2382,7 @@ dependencies = [
  "more-asserts",
  "serde",
  "thiserror",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
 ]
 
 [[package]]
@@ -2410,7 +2410,7 @@ dependencies = [
  "log",
  "rayon",
  "wasm-smith",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmprinter",
  "wasmtime",
  "wasmtime-wast",
@@ -2437,7 +2437,7 @@ dependencies = [
  "serde",
  "target-lexicon",
  "thiserror",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmtime-cranelift",
  "wasmtime-debug",
  "wasmtime-environ",
@@ -2454,7 +2454,7 @@ version = "0.21.0"
 dependencies = [
  "cranelift-codegen",
  "lightbeam",
- "wasmparser 0.65.0",
+ "wasmparser 0.66.0",
  "wasmtime-environ",
 ]
 
@@ -2547,7 +2547,7 @@ version = "0.21.0"
 dependencies = [
  "anyhow",
  "wasmtime",
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
@@ -2582,20 +2582,20 @@ dependencies = [
 
 [[package]]
 name = "wast"
-version = "26.0.1"
+version = "27.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b3f174eed73e885ede6c8fcc3fbea8c3757afa521840676496cde56bb742ddab"
+checksum = "c2c3ef5f6a72dffa44c24d5811123f704e18a1dbc83637d347b1852b41d3835c"
 dependencies = [
  "leb128",
 ]
 
 [[package]]
 name = "wat"
-version = "1.0.27"
+version = "1.0.28"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "26b2dccbce4d0e14875091846e110a2369267b18ddd0d6423479b88dad914d71"
+checksum = "835cf59c907f67e2bbc20f50157e08f35006fe2a8444d8ec9f5683e22f937045"
 dependencies = [
- "wast 26.0.1",
+ "wast 27.0.0",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index 5c7bc610b0..e2fed7a0eb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -42,7 +42,7 @@ libc = "0.2.60"
 log = "0.4.8"
 rayon = "1.2.1"
 humantime = "2.0.0"
-wasmparser = "0.65"
+wasmparser = "0.66"
 
 [dev-dependencies]
 env_logger = "0.8.1"
diff --git a/cranelift/codegen/Cargo.toml b/cranelift/codegen/Cargo.toml
index cf11e5db29..9a06ede0ce 100644
--- a/cranelift/codegen/Cargo.toml
+++ b/cranelift/codegen/Cargo.toml
@@ -30,7 +30,7 @@ peepmatic-traits = { path = "../peepmatic/crates/traits", optional = true, versi
 peepmatic-runtime = { path = "../peepmatic/crates/runtime", optional = true, version = "0.68.0" }
 regalloc = { version = "0.0.31" }
 souper-ir = { version = "1", optional = true }
-wast = { version = "26.0.1", optional = true }
+wast = { version = "27.0.0", optional = true }
 # It is a goal of the cranelift-codegen crate to have minimal external dependencies.
 # Please don't add any unless they are essential to the task of creating binary
 # machine code. Integration tests that need external dependencies can be
diff --git a/cranelift/peepmatic/Cargo.toml b/cranelift/peepmatic/Cargo.toml
index 4a4f872351..8040d3cd9d 100644
--- a/cranelift/peepmatic/Cargo.toml
+++ b/cranelift/peepmatic/Cargo.toml
@@ -15,7 +15,7 @@ peepmatic-macro = { version = "0.68.0", path = "crates/macro" }
 peepmatic-runtime = { version = "0.68.0", path = "crates/runtime", features = ["construct"] }
 peepmatic-traits = { version = "0.68.0", path = "crates/traits" }
 serde = { version = "1.0.105", features = ["derive"] }
-wast = "26.0.1"
+wast = "27.0.0"
 z3 = { version = "0.7.1", features = ["static-link-z3"] }
 
 [dev-dependencies]
diff --git a/cranelift/peepmatic/crates/fuzzing/Cargo.toml b/cranelift/peepmatic/crates/fuzzing/Cargo.toml
index b5b3739a76..bcaaafca10 100644
--- a/cranelift/peepmatic/crates/fuzzing/Cargo.toml
+++ b/cranelift/peepmatic/crates/fuzzing/Cargo.toml
@@ -21,4 +21,4 @@ peepmatic-test-operator = { path = "../test-operator" }
 peepmatic-traits = { path = "../traits" }
 rand = { version = "0.7.3", features = ["small_rng"] }
 serde = "1.0.106"
-wast = "26.0.1"
+wast = "27.0.0"
diff --git a/cranelift/peepmatic/crates/runtime/Cargo.toml b/cranelift/peepmatic/crates/runtime/Cargo.toml
index cbf29962e6..9c7b417dfa 100644
--- a/cranelift/peepmatic/crates/runtime/Cargo.toml
+++ b/cranelift/peepmatic/crates/runtime/Cargo.toml
@@ -16,7 +16,7 @@ peepmatic-automata = { version = "0.68.0", path = "../automata", features = ["se
 peepmatic-traits = { version = "0.68.0", path = "../traits" }
 serde = { version = "1.0.105", features = ["derive"] }
 thiserror = "1.0.15"
-wast = { version = "26.0.1", optional = true }
+wast = { version = "27.0.0", optional = true }
 
 [dev-dependencies]
 peepmatic-test-operator = { version = "0.68.0", path = "../test-operator" }
diff --git a/cranelift/peepmatic/crates/souper/Cargo.toml b/cranelift/peepmatic/crates/souper/Cargo.toml
index d018abe851..7e9a69c84b 100644
--- a/cranelift/peepmatic/crates/souper/Cargo.toml
+++ b/cranelift/peepmatic/crates/souper/Cargo.toml
@@ -16,4 +16,4 @@ log = "0.4.8"
 [dev-dependencies]
 peepmatic = { path = "../..", version = "0.68.0" }
 peepmatic-test-operator = { version = "0.68.0", path = "../test-operator" }
-wast = "26.0.1"
+wast = "27.0.0"
diff --git a/cranelift/peepmatic/crates/test-operator/Cargo.toml b/cranelift/peepmatic/crates/test-operator/Cargo.toml
index 2407d228f6..d3b2d7d866 100644
--- a/cranelift/peepmatic/crates/test-operator/Cargo.toml
+++ b/cranelift/peepmatic/crates/test-operator/Cargo.toml
@@ -9,4 +9,4 @@ edition = "2018"
 [dependencies]
 peepmatic-traits = { version = "0.68.0", path = "../traits" }
 serde = { version = "1.0.105", features = ["derive"] }
-wast = "26.0.1"
+wast = "27.0.0"
diff --git a/cranelift/wasm/Cargo.toml b/cranelift/wasm/Cargo.toml
index e15cb4d5bd..d796477901 100644
--- a/cranelift/wasm/Cargo.toml
+++ b/cranelift/wasm/Cargo.toml
@@ -12,7 +12,7 @@ keywords = ["webassembly", "wasm"]
 edition = "2018"
 
 [dependencies]
-wasmparser = { version = "0.65.0", default-features = false }
+wasmparser = { version = "0.66.0", default-features = false }
 cranelift-codegen = { path = "../codegen", version = "0.68.0", default-features = false }
 cranelift-entity = { path = "../entity", version = "0.68.0" }
 cranelift-frontend = { path = "../frontend", version = "0.68.0", default-features = false }
diff --git a/crates/debug/Cargo.toml b/crates/debug/Cargo.toml
index ced86dd08e..487968938e 100644
--- a/crates/debug/Cargo.toml
+++ b/crates/debug/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 
 [dependencies]
 gimli = "0.23.0"
-wasmparser = "0.65.0"
+wasmparser = "0.66.0"
 object = { version = "0.22.0", default-features = false, features = ["read", "write"] }
 wasmtime-environ = { path = "../environ", version = "0.21.0" }
 target-lexicon = { version = "0.11.0", default-features = false }
diff --git a/crates/environ/Cargo.toml b/crates/environ/Cargo.toml
index b2638909fc..5cd56a58e4 100644
--- a/crates/environ/Cargo.toml
+++ b/crates/environ/Cargo.toml
@@ -16,7 +16,7 @@ anyhow = "1.0"
 cranelift-codegen = { path = "../../cranelift/codegen", version = "0.68.0", features = ["enable-serde"] }
 cranelift-entity = { path = "../../cranelift/entity", version = "0.68.0", features = ["enable-serde"] }
 cranelift-wasm = { path = "../../cranelift/wasm", version = "0.68.0", features = ["enable-serde"] }
-wasmparser = "0.65.0"
+wasmparser = "0.66.0"
 indexmap = { version = "1.0.2", features = ["serde-1"] }
 thiserror = "1.0.4"
 serde = { version = "1.0.94", features = ["derive"] }
diff --git a/crates/fuzzing/Cargo.toml b/crates/fuzzing/Cargo.toml
index bac97cad18..525631c420 100644
--- a/crates/fuzzing/Cargo.toml
+++ b/crates/fuzzing/Cargo.toml
@@ -12,11 +12,11 @@ arbitrary = { version = "0.4.1", features = ["derive"] }
 env_logger = "0.8.1"
 log = "0.4.8"
 rayon = "1.2.1"
-wasmparser = "0.65.0"
-wasmprinter = "0.2.12"
+wasmparser = "0.66.0"
+wasmprinter = "0.2.13"
 wasmtime = { path = "../wasmtime" }
 wasmtime-wast = { path = "../wast" }
-wasm-smith = "0.1.9"
+wasm-smith = "0.1.10"
 
 [dev-dependencies]
-wat = "1.0.23"
+wat = "1.0.28"
diff --git a/crates/fuzzing/src/generators/api.rs b/crates/fuzzing/src/generators/api.rs
index d85f93170d..2605b058ef 100644
--- a/crates/fuzzing/src/generators/api.rs
+++ b/crates/fuzzing/src/generators/api.rs
@@ -223,7 +223,7 @@ fn predict_rss(wasm: &[u8]) -> Result<usize> {
                 for entry in s {
                     let initial = match entry? {
                         MemoryType::M32 { limits, .. } => limits.initial as usize,
-                        MemoryType::M64 { limits } => limits.initial as usize,
+                        MemoryType::M64 { limits, .. } => limits.initial as usize,
                     };
                     prediction += initial * 64 * 1024;
                 }
diff --git a/crates/jit/Cargo.toml b/crates/jit/Cargo.toml
index 0996132ad2..05b6844668 100644
--- a/crates/jit/Cargo.toml
+++ b/crates/jit/Cargo.toml
@@ -28,7 +28,7 @@ rayon = { version = "1.0", optional = true }
 region = "2.1.0"
 thiserror = "1.0.4"
 target-lexicon = { version = "0.11.0", default-features = false }
-wasmparser = "0.65.0"
+wasmparser = "0.66.0"
 more-asserts = "0.2.1"
 anyhow = "1.0"
 cfg-if = "1.0"
diff --git a/crates/lightbeam/Cargo.toml b/crates/lightbeam/Cargo.toml
index c8a8dac615..6be7be2abb 100644
--- a/crates/lightbeam/Cargo.toml
+++ b/crates/lightbeam/Cargo.toml
@@ -24,7 +24,7 @@ more-asserts = "0.2.1"
 smallvec = "1.0.0"
 thiserror = "1.0.9"
 typemap = "0.3"
-wasmparser = "0.65.0"
+wasmparser = "0.66.0"
 
 [dev-dependencies]
 lazy_static = "1.2"
diff --git a/crates/lightbeam/wasmtime/Cargo.toml b/crates/lightbeam/wasmtime/Cargo.toml
index fda0ab37b3..6cea3decb3 100644
--- a/crates/lightbeam/wasmtime/Cargo.toml
+++ b/crates/lightbeam/wasmtime/Cargo.toml
@@ -13,6 +13,6 @@ edition = "2018"
 
 [dependencies]
 lightbeam = { path = "..", version = "0.21.0" }
-wasmparser = "0.65"
+wasmparser = "0.66"
 cranelift-codegen = { path = "../../../cranelift/codegen", version = "0.68.0" }
 wasmtime-environ = { path = "../../environ", version = "0.21.0" }
diff --git a/crates/wasmtime/Cargo.toml b/crates/wasmtime/Cargo.toml
index f6e7b1f105..c2b4e16b9f 100644
--- a/crates/wasmtime/Cargo.toml
+++ b/crates/wasmtime/Cargo.toml
@@ -16,7 +16,7 @@ wasmtime-jit = { path = "../jit", version = "0.21.0" }
 wasmtime-cache = { path = "../cache", version = "0.21.0", optional = true }
 wasmtime-profiling = { path = "../profiling", version = "0.21.0" }
 target-lexicon = { version = "0.11.0", default-features = false }
-wasmparser = "0.65.0"
+wasmparser = "0.66.0"
 anyhow = "1.0.19"
 region = "2.2.0"
 libc = "0.2"
diff --git a/crates/wast/Cargo.toml b/crates/wast/Cargo.toml
index e149e23272..02d48e87c4 100644
--- a/crates/wast/Cargo.toml
+++ b/crates/wast/Cargo.toml
@@ -13,7 +13,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0.19"
 wasmtime = { path = "../wasmtime", version = "0.21.0", default-features = false }
-wast = "26.0.1"
+wast = "27.0.0"
 
 [badges]
 maintenance = { status = "actively-developed" }