diff --git a/Cargo.lock b/Cargo.lock
index e0e800513..ce4147119 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -85,7 +85,7 @@ checksum = "366ffbaa4442f4684d91e2cd7c5ea7c4ed8add41959a31447066e279e432b618"
 [[package]]
 name = "acadifc"
 version = "0.5.0"
-source = "git+https://github.com/OpenAEC-Foundation/acadifc.git?rev=0a61cf9#0a61cf98b6736e070e02be3bc7a1818ff7522095"
+source = "git+https://github.com/OpenAEC-Foundation/acadifc.git?rev=c65d396#c65d396abc3defcf96b1d71a3f812c8ad993e77c"
 dependencies = [
  "acadrust",
  "base64 0.22.1",
@@ -99,7 +99,7 @@ dependencies = [
 [[package]]
 name = "acadrust"
 version = "0.4.1"
-source = "git+https://github.com/HakanSeven12/cadcodec.git?rev=f226110#f226110a5b272838f9eeca4e3330ace827817db4"
+source = "git+https://github.com/HakanSeven12/cadcodec.git?rev=d645c7f#d645c7f526c199c02fcab7272d6b6f2d1c6b91ae"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",
@@ -110,7 +110,6 @@ dependencies = [
  "indexmap",
  "itoa",
  "memmap2",
- "nalgebra",
  "nom 7.1.3",
  "once_cell",
  "rayon",
@@ -353,15 +352,6 @@ dependencies = [
  "num-traits",
 ]
 
-[[package]]
-name = "approx"
-version = "0.5.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cab112f0a86d568ea0e627cc1d6be74a1e9cd55214684db5561995f6dad897c6"
-dependencies = [
- "num-traits",
-]
-
 [[package]]
 name = "arbitrary"
 version = "1.4.2"
@@ -945,7 +935,7 @@ checksum = "fc652a48c352aef3ea3aed32080501cf3ef6ed5da78602a020c991775b0aff04"
 [[package]]
 name = "cadkernel"
 version = "0.1.0"
-source = "git+https://github.com/HakanSeven12/cadkernel.git#5294a45d19508c22726c01b91215d3ca3fd4c815"
+source = "git+https://github.com/HakanSeven12/cadkernel.git#dee251f190a82f66d548e10d36f112815d9a901f"
 dependencies = [
  "cavalier_contours",
 ]
@@ -1031,7 +1021,7 @@ version = "0.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1a98d30140e3296250832bbaaff83b27dcd6fa3cc70fb6f1f3e5c9c0023b5317"
 dependencies = [
- "approx 0.4.0",
+ "approx",
  "num-traits",
  "serde",
 ]
@@ -3215,16 +3205,6 @@ dependencies = [
  "num-complex",
 ]
 
-[[package]]
-name = "matrixmultiply"
-version = "0.3.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f607c237553f086e7043417a51df26b2eb899d3caff94e6a67592ff992fedc7"
-dependencies = [
- "autocfg",
- "rawpointer",
-]
-
 [[package]]
 name = "maybe-rayon"
 version = "0.1.1"
@@ -3402,33 +3382,6 @@ dependencies = [
  "unicode-ident",
 ]
 
-[[package]]
-name = "nalgebra"
-version = "0.32.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7b5c17de023a86f59ed79891b2e5d5a94c705dbe904a5b5c9c952ea6221b03e4"
-dependencies = [
- "approx 0.5.1",
- "matrixmultiply",
- "nalgebra-macros",
- "num-complex",
- "num-rational",
- "num-traits",
- "simba",
- "typenum",
-]
-
-[[package]]
-name = "nalgebra-macros"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "254a5372af8fc138e36684761d3c0cdb758a4410e938babcff1c860ce14ddbfc"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn 2.0.119",
-]
-
 [[package]]
 name = "ndk"
 version = "0.9.0"
@@ -4720,12 +4673,6 @@ dependencies = [
  "objc2-quartz-core 0.3.2",
 ]
 
-[[package]]
-name = "rawpointer"
-version = "0.2.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "60a357793950651c4ed0f3f52338f53b2f809f32d83a07f72909fa13e4c6c1e3"
-
 [[package]]
 name = "rayon"
 version = "1.12.0"
@@ -5173,15 +5120,6 @@ version = "1.0.23"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9774ba4a74de5f7b1c1451ed6cd5285a32eddb5cccb8cc655a4e50009e06477f"
 
-[[package]]
-name = "safe_arch"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "96b02de82ddbe1b636e6170c21be622223aea188ef2e139be0a5b219ec215323"
-dependencies = [
- "bytemuck",
-]
-
 [[package]]
 name = "same-file"
 version = "1.0.6"
@@ -5367,19 +5305,6 @@ dependencies = [
  "libc",
 ]
 
-[[package]]
-name = "simba"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "061507c94fc6ab4ba1c9a0305018408e312e17c041eb63bef8aa726fa33aceae"
-dependencies = [
- "approx 0.5.1",
- "num-complex",
- "num-traits",
- "paste",
- "wide",
-]
-
 [[package]]
 name = "simd-adler32"
 version = "0.3.10"
@@ -6837,16 +6762,6 @@ dependencies = [
  "web-sys",
 ]
 
-[[package]]
-name = "wide"
-version = "0.7.33"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ce5da8ecb62bcd8ec8b7ea19f69a51275e91299be594ea5cc6ef7819e16cd03"
-dependencies = [
- "bytemuck",
- "safe_arch",
-]
-
 [[package]]
 name = "widestring"
 version = "1.2.1"
diff --git a/Cargo.toml b/Cargo.toml
index f6372fba8..93dc999b9 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -38,7 +38,7 @@ env_logger = "0.11"
 # The CAD stack is reached through acadifc, which re-exports the codec and
 # the geometry kernel. Aliased to `acadrust` so existing `use acadrust::…`
 # paths keep resolving.
-acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "0a61cf9", features = ["serde", "offset"] }
+acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "c65d396", features = ["serde", "offset"] }
 dwg-thumbnailer = { path = "crates/dwg-thumbnailer" }
 flate2 = "1"
 image = { version = "0.25", default-features = false, features = ["png", "jpeg", "bmp", "tiff"] }
diff --git a/crates/ocs_plugin_api/Cargo.toml b/crates/ocs_plugin_api/Cargo.toml
index bcb564cfd..e20d48c29 100644
--- a/crates/ocs_plugin_api/Cargo.toml
+++ b/crates/ocs_plugin_api/Cargo.toml
@@ -9,7 +9,7 @@ license = "GPL-3.0-only"
 # Pulled in only by the `host` feature, which adds the `acadrust`-typed
 # `HostApi` runtime surface. The default crate stays dependency-free so engine
 # crates and external tooling can depend on the manifest/ribbon contract cheaply.
-acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "0a61cf9", optional = true, features = ["serde"] }
+acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "c65d396", optional = true, features = ["serde"] }
 
 # Runtime IPC and serialization (host feature only).
 interprocess = { version = "2", optional = true }
diff --git a/crates/ocs_web_worker/Cargo.toml b/crates/ocs_web_worker/Cargo.toml
index a693f1ca3..03dda7e9f 100644
--- a/crates/ocs_web_worker/Cargo.toml
+++ b/crates/ocs_web_worker/Cargo.toml
@@ -8,7 +8,7 @@ publish = false
 crate-type = ["cdylib"]
 
 [dependencies]
-acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "0a61cf9", features = ["serde"] }
+acadrust = { package = "acadifc", git = "https://github.com/OpenAEC-Foundation/acadifc.git", rev = "c65d396", features = ["serde"] }
 bincode = "1.3"
 console_error_panic_hook = "0.1"
 getrandom = { version = "0.3", features = ["wasm_js"] }