diff --git a/Cargo.lock b/Cargo.lock
index dbec032ef7c1..1df0ef9d1be2 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -933,7 +933,7 @@ dependencies = [
 
 [[package]]
 name = "lightbeam"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "capstone",
@@ -1725,7 +1725,7 @@ dependencies = [
 
 [[package]]
 name = "test-programs"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "cfg-if",
@@ -1909,7 +1909,7 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"
 
 [[package]]
 name = "wasi-common"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "cfg-if",
@@ -1963,7 +1963,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "backtrace",
@@ -1989,7 +1989,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-c-api"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "wasi-common",
  "wasmtime",
@@ -1998,7 +1998,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-cli"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "faerie",
@@ -2029,7 +2029,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-debug"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "faerie",
@@ -2043,7 +2043,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-environ"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "base64",
@@ -2077,7 +2077,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-fuzz"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "arbitrary 0.2.0",
  "libfuzzer-sys",
@@ -2087,7 +2087,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-fuzzing"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "arbitrary 0.3.3",
@@ -2102,7 +2102,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-interface-types"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "walrus",
@@ -2117,7 +2117,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-jit"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "cfg-if",
@@ -2140,7 +2140,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-obj"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "faerie",
@@ -2150,7 +2150,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-profiling"
-version = "0.1.0"
+version = "0.12.0"
 dependencies = [
  "gimli",
  "goblin",
@@ -2164,7 +2164,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-py"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "pyo3",
@@ -2178,7 +2178,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-runtime"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "backtrace",
  "cc",
@@ -2196,7 +2196,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-rust"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "wasmtime",
@@ -2207,7 +2207,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-rust-macro"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -2216,7 +2216,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-wasi"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "log",
@@ -2228,7 +2228,7 @@ dependencies = [
 
 [[package]]
 name = "wasmtime-wast"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "anyhow",
  "wasmtime",
@@ -2273,7 +2273,7 @@ dependencies = [
 
 [[package]]
 name = "wig"
-version = "0.9.2"
+version = "0.12.0"
 dependencies = [
  "heck",
  "proc-macro2",
@@ -2314,7 +2314,7 @@ checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
 
 [[package]]
 name = "winx"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "bitflags",
  "cvt",
@@ -2336,7 +2336,7 @@ dependencies = [
 
 [[package]]
 name = "yanix"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "bitflags",
  "cfg-if",
diff --git a/Cargo.toml b/Cargo.toml
index 72d64bbced7c..372369823adb 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-cli"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Command-line interface for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/api/Cargo.toml b/crates/api/Cargo.toml
index ece18d58372e..a443d5db0b70 100644
--- a/crates/api/Cargo.toml
+++ b/crates/api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "High-level API to expose the Wasmtime runtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -9,9 +9,9 @@ readme = "README.md"
 edition = "2018"
 
 [dependencies]
-wasmtime-runtime = { path = "../runtime", version = "0.9.0" }
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
-wasmtime-jit = { path = "../jit", version = "0.9.0" }
+wasmtime-runtime = { path = "../runtime", version = "0.12.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
+wasmtime-jit = { path = "../jit", version = "0.12.0" }
 wasmtime-profiling = { path = "../profiling" }
 wasmparser = "0.51.2"
 target-lexicon = { version = "0.10.0", default-features = false }
@@ -29,7 +29,7 @@ winapi = "0.3.7"
 
 [dev-dependencies]
 # for wasmtime.rs
-wasi-common = { path = "../wasi-common", version = "0.9.0" }
+wasi-common = { path = "../wasi-common", version = "0.12.0" }
 pretty_env_logger = "0.3.0"
 rayon = "1.2.1"
 file-per-thread-logger = "0.1.1"
diff --git a/crates/c-api/Cargo.toml b/crates/c-api/Cargo.toml
index 3b279681afde..3b17fcce0347 100644
--- a/crates/c-api/Cargo.toml
+++ b/crates/c-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-c-api"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "C API to expose the Wasmtime runtime"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/debug/Cargo.toml b/crates/debug/Cargo.toml
index ea18f6fadb0c..0f02660553d4 100644
--- a/crates/debug/Cargo.toml
+++ b/crates/debug/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-debug"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Debug utils for WebAsssembly code in Cranelift"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -15,7 +15,7 @@ edition = "2018"
 gimli = "0.20.0"
 wasmparser = "0.51.2"
 faerie = "0.14.0"
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
 target-lexicon = { version = "0.10.0", default-features = false }
 anyhow = "1.0"
 thiserror = "1.0.4"
diff --git a/crates/environ/Cargo.toml b/crates/environ/Cargo.toml
index aa46ef451562..66b2c3847084 100644
--- a/crates/environ/Cargo.toml
+++ b/crates/environ/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-environ"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Standalone environment support for WebAsssembly code in Cranelift"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -17,7 +17,7 @@ cranelift-codegen = { version = "0.59.0", features = ["enable-serde"] }
 cranelift-entity = { version = "0.59.0", features = ["enable-serde"] }
 cranelift-wasm = { version = "0.59.0", features = ["enable-serde"] }
 wasmparser = "0.51.2"
-lightbeam = { path = "../lightbeam", optional = true, version = "0.9.0" }
+lightbeam = { path = "../lightbeam", optional = true, version = "0.12.0" }
 indexmap = "1.0.2"
 rayon = "1.2.1"
 thiserror = "1.0.4"
diff --git a/crates/fuzzing/Cargo.toml b/crates/fuzzing/Cargo.toml
index 9d92d7d5cca9..658659ffd66e 100644
--- a/crates/fuzzing/Cargo.toml
+++ b/crates/fuzzing/Cargo.toml
@@ -4,7 +4,7 @@ description = "Fuzzing infrastructure for Wasmtime"
 edition = "2018"
 name = "wasmtime-fuzzing"
 publish = false
-version = "0.9.0"
+version = "0.12.0"
 
 [dependencies]
 anyhow = "1.0.22"
@@ -14,7 +14,7 @@ env_logger = "0.7.1"
 log = "0.4.8"
 wasmparser = "0.51.2"
 wasmprinter = "0.2.1"
-wasmtime = { path = "../api", version = "0.9.0" }
+wasmtime = { path = "../api", version = "0.12.0" }
 
 [dev-dependencies]
 wat = "1.0"
diff --git a/crates/interface-types/Cargo.toml b/crates/interface-types/Cargo.toml
index 67e570acea56..1ba6fc409499 100644
--- a/crates/interface-types/Cargo.toml
+++ b/crates/interface-types/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-interface-types"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Support for wasm interface types with wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -15,11 +15,11 @@ anyhow = "1.0.19"
 walrus = "0.15"
 wasmparser = "0.51.2"
 wasm-webidl-bindings = "0.8"
-wasmtime = { path = "../api", version = "0.9.0" }
-wasmtime-jit = { path = "../jit", version = "0.9.0" }
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
-wasmtime-runtime = { path = "../runtime", version = "0.9.0" }
-wasmtime-wasi = { path = "../wasi", version = "0.9.0" }
+wasmtime = { path = "../api", version = "0.12.0" }
+wasmtime-jit = { path = "../jit", version = "0.12.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
+wasmtime-runtime = { path = "../runtime", version = "0.12.0" }
+wasmtime-wasi = { path = "../wasi", version = "0.12.0" }
 
 [badges]
 maintenance = { status = "actively-developed" }
diff --git a/crates/jit/Cargo.toml b/crates/jit/Cargo.toml
index e3e1046fea4d..d5cf2978349c 100644
--- a/crates/jit/Cargo.toml
+++ b/crates/jit/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-jit"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "JIT-style execution for WebAsssembly code in Cranelift"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -16,9 +16,9 @@ cranelift-entity = { version = "0.59.0", features = ["enable-serde"] }
 cranelift-wasm = { version = "0.59.0", features = ["enable-serde"] }
 cranelift-native = "0.59.0"
 cranelift-frontend = "0.59.0"
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
-wasmtime-runtime = { path = "../runtime", version = "0.9.0" }
-wasmtime-debug = { path = "../debug", version = "0.9.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
+wasmtime-runtime = { path = "../runtime", version = "0.12.0" }
+wasmtime-debug = { path = "../debug", version = "0.12.0" }
 wasmtime-profiling = { path = "../profiling" }
 region = "2.0.0"
 thiserror = "1.0.4"
diff --git a/crates/lightbeam/Cargo.toml b/crates/lightbeam/Cargo.toml
index 238655f46576..dbe63c7011b1 100644
--- a/crates/lightbeam/Cargo.toml
+++ b/crates/lightbeam/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lightbeam"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Lightbeam Project Developers"]
 description = "An optimising one-pass streaming compiler for WebAssembly"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/misc/py/Cargo.toml b/crates/misc/py/Cargo.toml
index 6e97e96431e6..001ae2930dfd 100644
--- a/crates/misc/py/Cargo.toml
+++ b/crates/misc/py/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-py"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Python extension for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -17,9 +17,9 @@ test = false
 doc = false
 
 [dependencies]
-wasmtime = { path = "../../api", version = "0.9.0" }
-wasmtime-interface-types = { path = "../../interface-types", version = "0.9.0" }
-wasmtime-wasi = { path = "../../wasi", version = "0.9.0" }
+wasmtime = { path = "../../api", version = "0.12.0" }
+wasmtime-interface-types = { path = "../../interface-types", version = "0.12.0" }
+wasmtime-wasi = { path = "../../wasi", version = "0.12.0" }
 target-lexicon = { version = "0.10.0", default-features = false }
 anyhow = "1.0.19"
 region = "2.0.0"
diff --git a/crates/misc/rust/Cargo.toml b/crates/misc/rust/Cargo.toml
index be1584f6daba..d5d2d5330993 100644
--- a/crates/misc/rust/Cargo.toml
+++ b/crates/misc/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-rust"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 description = "Rust extension for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -15,10 +15,10 @@ test = false
 doctest = false
 
 [dependencies]
-wasmtime-interface-types = { path = "../../interface-types", version = "0.9.0" }
-wasmtime-rust-macro = { path = "./macro", version = "0.9.0" }
-wasmtime-wasi = { path = "../../wasi", version = "0.9.0" }
-wasmtime = { path = "../../api", version = "0.9.0" }
+wasmtime-interface-types = { path = "../../interface-types", version = "0.12.0" }
+wasmtime-rust-macro = { path = "./macro", version = "0.12.0" }
+wasmtime-wasi = { path = "../../wasi", version = "0.12.0" }
+wasmtime = { path = "../../api", version = "0.12.0" }
 anyhow = "1.0.19"
 
 [badges]
diff --git a/crates/misc/rust/macro/Cargo.toml b/crates/misc/rust/macro/Cargo.toml
index 7c0b022686b4..f84ffef2ec64 100644
--- a/crates/misc/rust/macro/Cargo.toml
+++ b/crates/misc/rust/macro/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-rust-macro"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["Alex Crichton <alex@alexcrichton.com>"]
 description = "Macro support crate for wasmtime-rust"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/obj/Cargo.toml b/crates/obj/Cargo.toml
index 66843b6cbc2d..aa141ecbbb17 100644
--- a/crates/obj/Cargo.toml
+++ b/crates/obj/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-obj"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Native object file output for WebAsssembly code in Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -12,7 +12,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0"
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
 faerie = "0.14.0"
 more-asserts = "0.2.1"
 
diff --git a/crates/profiling/Cargo.toml b/crates/profiling/Cargo.toml
index ca676f40ce2a..8ca66bd1d9b1 100644
--- a/crates/profiling/Cargo.toml
+++ b/crates/profiling/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-profiling"
-version = "0.1.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Runtime library support for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/runtime/Cargo.toml b/crates/runtime/Cargo.toml
index e6ac4792fb70..f4842e2b4db9 100644
--- a/crates/runtime/Cargo.toml
+++ b/crates/runtime/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-runtime"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Runtime library support for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -12,7 +12,7 @@ edition = "2018"
 
 [dependencies]
 wasmtime-profiling = { path = "../profiling" }
-wasmtime-environ = { path = "../environ", version = "0.9.0" }
+wasmtime-environ = { path = "../environ", version = "0.12.0" }
 region = "2.0.0"
 libc = { version = "0.2.60", default-features = false }
 memoffset = "0.5.3"
diff --git a/crates/test-programs/Cargo.toml b/crates/test-programs/Cargo.toml
index dc79d87f8a19..7a57e79e3881 100644
--- a/crates/test-programs/Cargo.toml
+++ b/crates/test-programs/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "test-programs"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 readme = "README.md"
 edition = "2018"
@@ -10,9 +10,9 @@ publish = false
 cfg-if = "0.1.9"
 
 [dev-dependencies]
-wasi-common = { path = "../wasi-common", version = "0.9.0" }
-wasmtime-wasi = { path = "../wasi", version = "0.9.0" }
-wasmtime = { path = "../api", version = "0.9.0" }
+wasi-common = { path = "../wasi-common", version = "0.12.0" }
+wasmtime-wasi = { path = "../wasi", version = "0.12.0" }
+wasmtime = { path = "../api", version = "0.12.0" }
 target-lexicon = "0.10.0"
 pretty_env_logger = "0.3.0"
 tempfile = "3.1.0"
diff --git a/crates/test-programs/wasi-tests/Cargo.lock b/crates/test-programs/wasi-tests/Cargo.lock
index b1962b4c0e17..365383eec449 100644
--- a/crates/test-programs/wasi-tests/Cargo.lock
+++ b/crates/test-programs/wasi-tests/Cargo.lock
@@ -17,7 +17,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "wasi-tests"
-version = "0.9.0"
+version = "0.12.0"
 dependencies = [
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "more-asserts 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/crates/test-programs/wasi-tests/Cargo.toml b/crates/test-programs/wasi-tests/Cargo.toml
index 68a9a7add1a5..79affc2fffaf 100644
--- a/crates/test-programs/wasi-tests/Cargo.toml
+++ b/crates/test-programs/wasi-tests/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasi-tests"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 readme = "README.md"
 edition = "2018"
diff --git a/crates/wasi-common/Cargo.toml b/crates/wasi-common/Cargo.toml
index 822a23739801..36c7017cbc2b 100644
--- a/crates/wasi-common/Cargo.toml
+++ b/crates/wasi-common/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasi-common"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "WASI implementation in Rust"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -20,13 +20,13 @@ log = "0.4"
 filetime = "0.2.7"
 lazy_static = "1.4.0"
 num = { version = "0.2.0", default-features = false }
-wig = { path = "wig", version = "0.9.2" }
+wig = { path = "wig", version = "0.12.0" }
 
 [target.'cfg(unix)'.dependencies]
-yanix = { path = "yanix", version = "0.9.0" }
+yanix = { path = "yanix", version = "0.12.0" }
 
 [target.'cfg(windows)'.dependencies]
-winx = { path = "winx", version = "0.9.0" }
+winx = { path = "winx", version = "0.12.0" }
 winapi = "0.3"
 cpu-time = "1.0"
 
diff --git a/crates/wasi-common/wig/Cargo.toml b/crates/wasi-common/wig/Cargo.toml
index f38e94b7ee6d..cdd136d723ee 100644
--- a/crates/wasi-common/wig/Cargo.toml
+++ b/crates/wasi-common/wig/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wig"
-version = "0.9.2"
+version = "0.12.0"
 authors = ["Dan Gohman <sunfish@mozilla.com>"]
 description = "WebAssembly Interface Generator"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/wasi-common/winx/Cargo.toml b/crates/wasi-common/winx/Cargo.toml
index fc04ffa22b2f..7c1ab7442381 100644
--- a/crates/wasi-common/winx/Cargo.toml
+++ b/crates/wasi-common/winx/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "winx"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["Jakub Konka <kubkon@jakubkonka.com>"]
 description = "Windows API helper library"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/wasi-common/yanix/Cargo.toml b/crates/wasi-common/yanix/Cargo.toml
index 417ff89c4d6d..c1e77c945946 100644
--- a/crates/wasi-common/yanix/Cargo.toml
+++ b/crates/wasi-common/yanix/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "yanix"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "Yet Another Nix crate: a Unix API helper library"
 license = "Apache-2.0 WITH LLVM-exception"
diff --git a/crates/wasi/Cargo.toml b/crates/wasi/Cargo.toml
index df4570277074..47fae58778df 100644
--- a/crates/wasi/Cargo.toml
+++ b/crates/wasi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-wasi"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Cranelift Project Developers"]
 description = "WASI API support for Wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -13,10 +13,10 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0"
 log = { version = "0.4.8", default-features = false }
-wasi-common = { path = "../wasi-common", version = "0.9.0" }
-wasmtime = { path = "../api", version = "0.9.0" }
-wasmtime-runtime = { path = "../runtime", version = "0.9.0" }
-wig = { path = "../wasi-common/wig", version = "0.9.2" }
+wasi-common = { path = "../wasi-common", version = "0.12.0" }
+wasmtime = { path = "../api", version = "0.12.0" }
+wasmtime-runtime = { path = "../runtime", version = "0.12.0" }
+wig = { path = "../wasi-common/wig", version = "0.12.0" }
 
 [badges]
 maintenance = { status = "actively-developed" }
diff --git a/crates/wast/Cargo.toml b/crates/wast/Cargo.toml
index afa7a35c6ba0..f21d04df8762 100644
--- a/crates/wast/Cargo.toml
+++ b/crates/wast/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-wast"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 description = "wast testing support for wasmtime"
 license = "Apache-2.0 WITH LLVM-exception"
@@ -12,7 +12,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.19"
-wasmtime = { path = "../api", version = "0.9.0" }
+wasmtime = { path = "../api", version = "0.12.0" }
 wast = "9.0.0"
 
 [badges]
diff --git a/fuzz/Cargo.toml b/fuzz/Cargo.toml
index bd5c85128458..ec70d6c6955e 100644
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "wasmtime-fuzz"
-version = "0.9.0"
+version = "0.12.0"
 authors = ["The Wasmtime Project Developers"]
 edition = "2018"
 publish = false
diff --git a/scripts/bump-wasmtime-version.sh b/scripts/bump-wasmtime-version.sh
index 4a56b5cadb03..333167b60398 100755
--- a/scripts/bump-wasmtime-version.sh
+++ b/scripts/bump-wasmtime-version.sh
@@ -9,7 +9,7 @@ topdir=$(dirname "$0")/..
 cd "$topdir"
 
 # All the wasmtime-* crates have the same version number
-version="0.10.0"
+version="0.12.0"
 
 # Update the version numbers of the crates to $version.
 echo "Updating crate versions to $version"