diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 828ba711..e4bb7e9a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -391,11 +391,6 @@ jobs:
           wget -O - $URL | tar -xJ --strip-components=1 -C ~/.cargo/bin
           wasmtime --version
       - uses: Swatinem/rust-cache@v2
-      # TODO(MSRV-1.87): Remove this step.
-      - name: Generate MSRV-compatible Cargo.lock
-        env:
-          CARGO_RESOLVER_INCOMPATIBLE_RUST_VERSIONS: "fallback"
-        run: cargo update -p wasip2
       - run: cargo test --target wasm32-wasip2
 
   # TODO: enable after pre-built std will be provided by Rust 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d31beb7e..5bbcd4a9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,10 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-- Restore MSRV to 1.85 for wasm32-wasip3 targets. [#824]
+### Changed
+- Drop `wasip2` and `wasip3` dependencies in favor of manual bindings [#830]
 
 [Unreleased]: https://github.com/rust-random/getrandom/compare/v0.4.2...master
-[#824]: https://github.com/rust-random/getrandom/pull/824
+[#830]: https://github.com/rust-random/getrandom/pull/830
 
 ## [0.4.2] - 2026-03-03
 
diff --git a/Cargo.lock b/Cargo.lock
index 7c489472..83685636 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2,12 +2,6 @@
 # It is not intended for manual editing.
 version = 4
 
-[[package]]
-name = "anyhow"
-version = "1.0.102"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7f202df86484c868dbad7eaa557ef785d5c66295e41b460ef922eca0723b842c"
-
 [[package]]
 name = "async-trait"
 version = "0.1.89"
@@ -25,12 +19,6 @@ version = "1.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "c08606f8c3cbf4ce6ec8e28fb0014a2c086708fe954eaa885384a6165172e7e8"
 
-[[package]]
-name = "bitflags"
-version = "2.11.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
-
 [[package]]
 name = "bumpalo"
 version = "3.20.2"
@@ -59,24 +47,12 @@ version = "1.0.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9330f8b2ff13f34540b44e946ef35111825727b38d33286ef986142615121801"
 
-[[package]]
-name = "equivalent"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "877a4ace8713b0bcf2a4e7eec82529c029f1d0619886d18145fea96c3ffe5c0f"
-
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5baebc0774151f905a1a2cc41989300b1e6fbb29aff0ceffa1064fdd3088d582"
 
-[[package]]
-name = "foldhash"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
-
 [[package]]
 name = "futures-core"
 version = "0.3.32"
@@ -110,51 +86,10 @@ dependencies = [
  "libc",
  "r-efi",
  "rand_core",
- "wasip2",
- "wasip3",
  "wasm-bindgen",
  "wasm-bindgen-test",
 ]
 
-[[package]]
-name = "hashbrown"
-version = "0.15.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9229cfe53dfd69f0609a49f65461bd93001ea1ef889cd5529dd176593f5338a1"
-dependencies = [
- "foldhash",
-]
-
-[[package]]
-name = "hashbrown"
-version = "0.16.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "841d1cc9bed7f9236f321df977030373f4a4163ae1a7dbfe1a51a2c1a51d9100"
-
-[[package]]
-name = "heck"
-version = "0.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
-
-[[package]]
-name = "id-arena"
-version = "2.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3d3067d79b975e8844ca9eb072e16b31c3c1c36928edf9c6789548c524d0d954"
-
-[[package]]
-name = "indexmap"
-version = "2.13.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7714e70437a7dc3ac8eb7e6f8df75fd8eb422675fc7678aff7364301092b1017"
-dependencies = [
- "equivalent",
- "hashbrown 0.16.1",
- "serde",
- "serde_core",
-]
-
 [[package]]
 name = "itoa"
 version = "1.0.17"
@@ -171,17 +106,11 @@ dependencies = [
  "wasm-bindgen",
 ]
 
-[[package]]
-name = "leb128fmt"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "09edd9e8b54e49e587e4f6295a7d29c3ea94d469cb40ab8ca70b288248a81db2"
-
 [[package]]
 name = "libc"
-version = "0.2.182"
+version = "0.2.183"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6800badb6cb2082ffd7b6a67e6125bb39f18782f793520caee8cb8846be06112"
+checksum = "b5b646652bf6661599e1da8901b3b9522896f01e736bad5f723fe7a3a27f899d"
 
 [[package]]
 name = "libm"
@@ -189,12 +118,6 @@ version = "0.2.16"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b6d2cec3eae94f9f509c767b45932f1ada8350c4bdb85af2fcab4a3c14807981"
 
-[[package]]
-name = "log"
-version = "0.4.29"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5e5032e24019045c762d3c0f28f5b6b8bbf38563a65908389bf7978758920897"
-
 [[package]]
 name = "memchr"
 version = "2.8.0"
@@ -248,16 +171,6 @@ version = "0.2.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "a89322df9ebe1c1578d689c92318e070967d1042b512afbe49518723f4e6d5cd"
 
-[[package]]
-name = "prettyplease"
-version = "0.2.37"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "479ca8adacdd7ce8f1fb39ce9ecccbfe93a3f1344b3d0d97f20bc0196208f62b"
-dependencies = [
- "proc-macro2",
- "syn",
-]
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.106"
@@ -269,9 +182,9 @@ dependencies = [
 
 [[package]]
 name = "quote"
-version = "1.0.44"
+version = "1.0.45"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "21b2ebcf727b7760c461f091f9f0f539b77b8e87f2fd88131e7f1b433b3cece4"
+checksum = "41f2619966050689382d2b44f664f4bc593e129785a36d6ee376ddf37259b924"
 dependencies = [
  "proc-macro2",
 ]
@@ -303,12 +216,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "semver"
-version = "1.0.27"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d767eb0aabc880b29956c35734170f26ed551a859dbd361d140cdbeca61ab1e2"
-
 [[package]]
 name = "serde"
 version = "1.0.228"
@@ -381,12 +288,6 @@ version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "e6e4313cd5fcd3dad5cafa179702e2b244f760991f45397d14d4ebf38247da75"
 
-[[package]]
-name = "unicode-xid"
-version = "0.2.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ebc1c04c71510c7f702b52b7c350734c9ff1295c464a03335b00bb84fc54f853"
-
 [[package]]
 name = "walkdir"
 version = "2.5.0"
@@ -397,24 +298,6 @@ dependencies = [
  "winapi-util",
 ]
 
-[[package]]
-name = "wasip2"
-version = "1.0.2+wasi-0.2.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9517f9239f02c069db75e65f174b3da828fe5f5b945c4dd26bd25d89c03ebcf5"
-dependencies = [
- "wit-bindgen",
-]
-
-[[package]]
-name = "wasip3"
-version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
-dependencies = [
- "wit-bindgen",
-]
-
 [[package]]
 name = "wasm-bindgen"
 version = "0.2.114"
@@ -513,40 +396,6 @@ version = "0.2.114"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "cfe29135b180b72b04c74aa97b2b4a2ef275161eff9a6c7955ea9eaedc7e1d4e"
 
-[[package]]
-name = "wasm-encoder"
-version = "0.244.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
-dependencies = [
- "leb128fmt",
- "wasmparser",
-]
-
-[[package]]
-name = "wasm-metadata"
-version = "0.244.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
-dependencies = [
- "anyhow",
- "indexmap",
- "wasm-encoder",
- "wasmparser",
-]
-
-[[package]]
-name = "wasmparser"
-version = "0.244.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
-dependencies = [
- "bitflags",
- "hashbrown 0.15.5",
- "indexmap",
- "semver",
-]
-
 [[package]]
 name = "web-sys"
 version = "0.3.91"
@@ -581,94 +430,6 @@ dependencies = [
  "windows-link",
 ]
 
-[[package]]
-name = "wit-bindgen"
-version = "0.51.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
-dependencies = [
- "wit-bindgen-rust-macro",
-]
-
-[[package]]
-name = "wit-bindgen-core"
-version = "0.51.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
-dependencies = [
- "anyhow",
- "heck",
- "wit-parser",
-]
-
-[[package]]
-name = "wit-bindgen-rust"
-version = "0.51.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
-dependencies = [
- "anyhow",
- "heck",
- "indexmap",
- "prettyplease",
- "syn",
- "wasm-metadata",
- "wit-bindgen-core",
- "wit-component",
-]
-
-[[package]]
-name = "wit-bindgen-rust-macro"
-version = "0.51.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
-dependencies = [
- "anyhow",
- "prettyplease",
- "proc-macro2",
- "quote",
- "syn",
- "wit-bindgen-core",
- "wit-bindgen-rust",
-]
-
-[[package]]
-name = "wit-component"
-version = "0.244.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
-dependencies = [
- "anyhow",
- "bitflags",
- "indexmap",
- "log",
- "serde",
- "serde_derive",
- "serde_json",
- "wasm-encoder",
- "wasm-metadata",
- "wasmparser",
- "wit-parser",
-]
-
-[[package]]
-name = "wit-parser"
-version = "0.244.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
-dependencies = [
- "anyhow",
- "id-arena",
- "indexmap",
- "log",
- "semver",
- "serde",
- "serde_derive",
- "serde_json",
- "unicode-xid",
- "wasmparser",
-]
-
 [[package]]
 name = "zmij"
 version = "1.0.21"
diff --git a/Cargo.toml b/Cargo.toml
index 8580a64e..f1029ad3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -76,15 +76,6 @@ libc = { version = "0.2.154", default-features = false }
 [target.'cfg(target_os = "vxworks")'.dependencies]
 libc = { version = "0.2.154", default-features = false }
 
-# wasi_p2_3
-[target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p2"))'.dependencies]
-wasip2 = { version = "1", default-features = false }
-
-# wasi_p2_3
-[target.'cfg(all(target_arch = "wasm32", target_os = "wasi", target_env = "p3"))'.dependencies]
-# TODO: remove 0.3 after MSRV bumped to 1.87+.
-wasip3 = ">=0.3, <=0.4"
-
 # wasm_js
 [target.'cfg(all(target_arch = "wasm32", any(target_os = "unknown", target_os = "none")))'.dependencies]
 wasm-bindgen = { version = "0.2.98", default-features = false, optional = true }
diff --git a/src/backends/wasi_p2_3.rs b/src/backends/wasi_p2_3.rs
index 3b8ee968..133aae98 100644
--- a/src/backends/wasi_p2_3.rs
+++ b/src/backends/wasi_p2_3.rs
@@ -2,20 +2,26 @@
 use crate::Error;
 use core::{mem::MaybeUninit, ptr::copy_nonoverlapping};
 
-#[cfg(target_env = "p2")]
-use wasip2 as wasi;
-
-// Workaround to silence `unexpected_cfgs` warning
-// on Rust version between 1.85 and 1.91
-#[cfg(not(target_env = "p2"))]
-#[cfg(target_env = "p3")]
-use wasip3 as wasi;
-
 #[cfg(not(target_env = "p2"))]
 #[cfg(not(target_env = "p3"))]
 compile_error!("Unknown version of WASI (only previews 1, 2 and 3 are supported)");
 
-use wasi::random::random::get_random_u64;
+// Use manual bindings instead of `wasip2/3` crates to prevent Cargo.lock bloat.
+//
+// Technically, such manual bindings may not work since we also have to provide
+// type information which is expected by `wasm-component-ld`, but we assume that
+// in practice the relevant type information will be provided by linking to `std`
+// and/or `wasip2/3` crate.
+//
+// See https://github.com/rust-random/getrandom/pull/828 for more information.
+#[cfg_attr(target_env = "p2", link(wasm_import_module = "wasi:random/random@0.2.0"))]
+// TODO: drop the RC part on full WASIp3 release
+// TODO(MSRV-1.92): Use `target_env = "p3"`
+#[cfg_attr(not(target_env = "p2"), link(wasm_import_module = "wasi:random/random@0.3.0-rc-2026-01-06"))]
+unsafe extern "C" {
+    #[link_name = "get-random-u64"]
+    safe fn get_random_u64() -> u64;
+}
 
 #[inline]
 pub fn inner_u32() -> Result<u32, Error> {