diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9e1e70e8..72e9084b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,13 +1,13 @@
 {
-  "core/engine": "2.1.5",
-  "core/expression": "2.1.5",
-  "core/types": "2.1.5",
-  "core/template": "2.1.5",
-  "core/macros": "2.1.5",
-  "bindings/nodejs": "2.1.8",
-  "bindings/python": "2.1.5",
-  "bindings/uniffi": "2.1.5",
-  "bindings/c": "2.1.5",
-  "benchmark/rust": "0.0.22",
-  "core/expression_repl": "2.0.7"
+  "core/engine": "2.1.6",
+  "core/expression": "2.1.6",
+  "core/types": "2.1.6",
+  "core/template": "2.1.6",
+  "core/macros": "2.1.6",
+  "bindings/nodejs": "2.1.9",
+  "bindings/python": "2.1.6",
+  "bindings/uniffi": "2.1.6",
+  "bindings/c": "2.1.6",
+  "benchmark/rust": "0.0.23",
+  "core/expression_repl": "2.0.8"
 }
diff --git a/Cargo.lock b/Cargo.lock
index 0bbab657..041bca5b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1208,7 +1208,7 @@ dependencies = [
 
 [[package]]
 name = "expression_repl"
-version = "2.0.7"
+version = "2.0.8"
 dependencies = [
  "colored",
  "rustyline",
@@ -6027,7 +6027,7 @@ dependencies = [
 
 [[package]]
 name = "zen-benchmark"
-version = "0.0.22"
+version = "0.0.23"
 dependencies = [
  "serde",
  "serde_json",
@@ -6038,7 +6038,7 @@ dependencies = [
 
 [[package]]
 name = "zen-engine"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",
@@ -6083,7 +6083,7 @@ dependencies = [
 
 [[package]]
 name = "zen-expression"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "ahash 0.8.12",
  "anyhow",
@@ -6117,7 +6117,7 @@ dependencies = [
 
 [[package]]
 name = "zen-ffi"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "anyhow",
  "cbindgen",
@@ -6134,7 +6134,7 @@ dependencies = [
 
 [[package]]
 name = "zen-macros"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -6144,7 +6144,7 @@ dependencies = [
 
 [[package]]
 name = "zen-nodejs"
-version = "2.1.8"
+version = "2.1.9"
 dependencies = [
  "ahash 0.8.12",
  "iana-time-zone",
@@ -6164,7 +6164,7 @@ dependencies = [
 
 [[package]]
 name = "zen-python"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "anyhow",
  "either",
@@ -6183,7 +6183,7 @@ dependencies = [
 
 [[package]]
 name = "zen-tmpl"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "serde",
  "serde_json",
@@ -6193,7 +6193,7 @@ dependencies = [
 
 [[package]]
 name = "zen-types"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "ahash 0.8.12",
  "hipstr",
@@ -6208,7 +6208,7 @@ dependencies = [
 
 [[package]]
 name = "zen-uniffi"
-version = "2.1.5"
+version = "2.1.6"
 dependencies = [
  "async-trait",
  "serde",
diff --git a/benchmark/rust/Cargo.toml b/benchmark/rust/Cargo.toml
index 2bc7d2ae..ec6f3fc0 100644
--- a/benchmark/rust/Cargo.toml
+++ b/benchmark/rust/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zen-benchmark"
-version = "0.0.22"
+version = "0.0.23"
 edition = "2021"
 publish = false
 
diff --git a/bindings/c/CHANGELOG.md b/bindings/c/CHANGELOG.md
index 42610fbf..d9ab2eeb 100644
--- a/bindings/c/CHANGELOG.md
+++ b/bindings/c/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/go-v2.1.5...go-v2.1.6) (2026-10-21)
+
 ## [2.1.5](https://github.com/gorules/zen/compare/go-v2.1.4...go-v2.1.5) (2026-10-20)
 
 ## [2.1.4](https://github.com/gorules/zen/compare/go-v2.1.3...go-v2.1.4) (2026-10-13)
diff --git a/bindings/c/Cargo.toml b/bindings/c/Cargo.toml
index 1b7fc340..9c5c4b36 100644
--- a/bindings/c/Cargo.toml
+++ b/bindings/c/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zen-ffi"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2021"
 license = "MIT"
 publish = false
diff --git a/bindings/nodejs/CHANGELOG.md b/bindings/nodejs/CHANGELOG.md
index 6466679e..da1bd306 100644
--- a/bindings/nodejs/CHANGELOG.md
+++ b/bindings/nodejs/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [2.1.9](https://github.com/gorules/zen/compare/nodejs-v2.1.8...nodejs-v2.1.9) (2026-10-21)
+
 ## [2.1.8](https://github.com/gorules/zen/compare/nodejs-v2.1.7...nodejs-v2.1.8) (2026-10-20)
 
 ## [2.1.7](https://github.com/gorules/zen/compare/nodejs-v2.1.6...nodejs-v2.1.7) (2026-10-13)
diff --git a/bindings/nodejs/Cargo.toml b/bindings/nodejs/Cargo.toml
index 6d3cd156..2be0e581 100644
--- a/bindings/nodejs/Cargo.toml
+++ b/bindings/nodejs/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zen-nodejs"
-version = "2.1.8"
+version = "2.1.9"
 edition = "2021"
 license = "MIT"
 publish = false
diff --git a/bindings/nodejs/package.json b/bindings/nodejs/package.json
index bca8c891..e82384ce 100644
--- a/bindings/nodejs/package.json
+++ b/bindings/nodejs/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@gorules/zen-engine",
   "description": "Open-source Business Rules Engine for Node.js, powered by Rust",
-  "version": "2.1.8",
+  "version": "2.1.9",
   "main": "index.js",
   "browser": "browser.js",
   "types": "./index.d.ts",
diff --git a/bindings/python/CHANGELOG.md b/bindings/python/CHANGELOG.md
index 04e6f7d9..030631f1 100644
--- a/bindings/python/CHANGELOG.md
+++ b/bindings/python/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/python-v2.1.5...python-v2.1.6) (2026-10-21)
+
 ## [2.1.5](https://github.com/gorules/zen/compare/python-v2.1.4...python-v2.1.5) (2026-10-20)
 
 ## [2.1.4](https://github.com/gorules/zen/compare/python-v2.1.3...python-v2.1.4) (2026-10-13)
diff --git a/bindings/python/Cargo.toml b/bindings/python/Cargo.toml
index 0a4503a7..ae9e587e 100644
--- a/bindings/python/Cargo.toml
+++ b/bindings/python/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zen-python"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2021"
 license = "MIT"
 publish = false
diff --git a/bindings/uniffi/CHANGELOG.md b/bindings/uniffi/CHANGELOG.md
index f806c8e1..eaedddc6 100644
--- a/bindings/uniffi/CHANGELOG.md
+++ b/bindings/uniffi/CHANGELOG.md
@@ -1,5 +1,7 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/uniffi-v2.1.5...uniffi-v2.1.6) (2026-10-21)
+
 ## [2.1.5](https://github.com/gorules/zen/compare/uniffi-v2.1.4...uniffi-v2.1.5) (2026-10-20)
 
 ## [2.1.4](https://github.com/gorules/zen/compare/uniffi-v2.1.3...uniffi-v2.1.4) (2026-10-13)
diff --git a/bindings/uniffi/Cargo.toml b/bindings/uniffi/Cargo.toml
index cbca3042..fe9fb90b 100644
--- a/bindings/uniffi/Cargo.toml
+++ b/bindings/uniffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "zen-uniffi"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2024"
 license = "MIT"
 publish = false
diff --git a/core/engine/CHANGELOG.md b/core/engine/CHANGELOG.md
index 453c4985..3dc2db46 100644
--- a/core/engine/CHANGELOG.md
+++ b/core/engine/CHANGELOG.md
@@ -1,5 +1,21 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/zen-engine-v2.1.5...zen-engine-v2.1.6) (2026-10-21)
+
+
+### Bug Fixes
+
+* **engine:** drop rows shadowed by an earlier row when compressing ([#551](https://github.com/gorules/zen/issues/551)) ([f2aa773](https://github.com/gorules/zen/commit/f2aa773c7266032cb02b479a3cdd8a4a8213d756))
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * zen-types bumped from 2.1.5 to 2.1.6
+    * zen-expression bumped from 2.1.5 to 2.1.6
+    * zen-tmpl bumped from 2.1.5 to 2.1.6
+
 ## [2.1.5](https://github.com/gorules/zen/compare/zen-engine-v2.1.4...zen-engine-v2.1.5) (2026-10-20)
 
 
diff --git a/core/engine/Cargo.toml b/core/engine/Cargo.toml
index d9a6ab3a..033e03d3 100644
--- a/core/engine/Cargo.toml
+++ b/core/engine/Cargo.toml
@@ -3,7 +3,7 @@ authors = ["GoRules Team <bot@gorules.io>"]
 description = "Business rules engine"
 name = "zen-engine"
 license = "MIT"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2021"
 repository = "https://github.com/gorules/zen.git"
 homepage = "https://gorules.io"
@@ -27,9 +27,9 @@ rust_decimal = { workspace = true, features = ["maths-nopanic"] }
 fixedbitset = "0.5"
 tokio = { workspace = true, features = ["sync", "time"] }
 rquickjs = { version = "0.10", features = ["macro", "loader", "rust-alloc", "futures", "either", "properties"] }
-zen-types = { path = "../types", version = "2.1.5" }
-zen-expression = { path = "../expression", version = "2.1.5" }
-zen-tmpl = { path = "../template", version = "2.1.5" }
+zen-types = { path = "../types", version = "2.1.6" }
+zen-expression = { path = "../expression", version = "2.1.6" }
+zen-tmpl = { path = "../template", version = "2.1.6" }
 nohash-hasher = { workspace = true }
 downcast-rs = { version = "2.0", features = ["std", "sync"] }
 arc-swap = "1"
diff --git a/core/expression/CHANGELOG.md b/core/expression/CHANGELOG.md
index 022ac5fb..3513d25c 100644
--- a/core/expression/CHANGELOG.md
+++ b/core/expression/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/zen-expression-v2.1.5...zen-expression-v2.1.6) (2026-10-21)
+
+
+### Miscellaneous
+
+* **zen-expression:** Synchronize core versions
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * zen-macros bumped from 2.1.5 to 2.1.6
+    * zen-types bumped from 2.1.5 to 2.1.6
+
 ## [2.1.5](https://github.com/gorules/zen/compare/zen-expression-v2.1.4...zen-expression-v2.1.5) (2026-10-20)
 
 
diff --git a/core/expression/Cargo.toml b/core/expression/Cargo.toml
index 579a8769..24cdabe7 100644
--- a/core/expression/Cargo.toml
+++ b/core/expression/Cargo.toml
@@ -3,7 +3,7 @@ authors = ["GoRules Team <bot@gorules.io>"]
 description = "Zen Expression Language"
 name = "zen-expression"
 license = "MIT"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2021"
 repository = "https://github.com/gorules/zen.git"
 homepage = "https://gorules.io"
@@ -31,8 +31,8 @@ nohash-hasher = { workspace = true }
 strsim = "0.11"
 iana-time-zone = "0.1"
 
-zen-macros = { path = "../macros", version = "2.1.5" }
-zen-types = { path = "../types", version = "2.1.5" }
+zen-macros = { path = "../macros", version = "2.1.6" }
+zen-types = { path = "../types", version = "2.1.6" }
 
 [dev-dependencies]
 criterion = { workspace = true }
diff --git a/core/expression_repl/CHANGELOG.md b/core/expression_repl/CHANGELOG.md
index 57b3561a..72984f0f 100644
--- a/core/expression_repl/CHANGELOG.md
+++ b/core/expression_repl/CHANGELOG.md
@@ -82,6 +82,10 @@
   * dependencies
     * zen-expression bumped from 2.1.4 to 2.1.5
 
+* The following workspace dependencies were updated
+  * dependencies
+    * zen-expression bumped from 2.1.5 to 2.1.6
+
 ## [1.0.0-beta.0](https://github.com/gorules/zen/compare/expression_repl-v0.55.1...expression_repl-v1.0.0-beta.0) (2026-06-25)
 
 
diff --git a/core/expression_repl/Cargo.toml b/core/expression_repl/Cargo.toml
index 31af0209..98888dd6 100644
--- a/core/expression_repl/Cargo.toml
+++ b/core/expression_repl/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "expression_repl"
-version = "2.0.7"
+version = "2.0.8"
 edition = "2021"
 publish = false
 
@@ -10,5 +10,5 @@ publish = false
 colored = "3"
 rustyline = "15"
 serde_json = { workspace = true }
-zen-expression = { path = "../expression", version = "2.1.5" }
+zen-expression = { path = "../expression", version = "2.1.6" }
 
diff --git a/core/macros/CHANGELOG.md b/core/macros/CHANGELOG.md
index 825342bc..ad02bcd1 100644
--- a/core/macros/CHANGELOG.md
+++ b/core/macros/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/zen-macros-v2.1.5...zen-macros-v2.1.6) (2026-10-21)
+
+
+### Miscellaneous
+
+* **zen-macros:** Synchronize core versions
+
 ## [2.1.5](https://github.com/gorules/zen/compare/zen-macros-v2.1.4...zen-macros-v2.1.5) (2026-10-20)
 
 
diff --git a/core/macros/Cargo.toml b/core/macros/Cargo.toml
index d4257125..a2dcd205 100644
--- a/core/macros/Cargo.toml
+++ b/core/macros/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "zen-macros"
 description = "Zen Helper Macros"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2024"
 license = "MIT"
 repository = "https://github.com/gorules/zen.git"
diff --git a/core/template/CHANGELOG.md b/core/template/CHANGELOG.md
index fa63d1a5..f5a882bb 100644
--- a/core/template/CHANGELOG.md
+++ b/core/template/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/zen-tmpl-v2.1.5...zen-tmpl-v2.1.6) (2026-10-21)
+
+
+### Miscellaneous
+
+* **zen-tmpl:** Synchronize core versions
+
+
+### Dependencies
+
+* The following workspace dependencies were updated
+  * dependencies
+    * zen-expression bumped from 2.1.5 to 2.1.6
+
 ## [2.1.5](https://github.com/gorules/zen/compare/zen-tmpl-v2.1.4...zen-tmpl-v2.1.5) (2026-10-20)
 
 
diff --git a/core/template/Cargo.toml b/core/template/Cargo.toml
index 195cca65..87dc4ecb 100644
--- a/core/template/Cargo.toml
+++ b/core/template/Cargo.toml
@@ -3,13 +3,13 @@ authors = ["GoRules Team <bot@gorules.io>"]
 description = "Zen Template Language"
 name = "zen-tmpl"
 license = "MIT"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2021"
 repository = "https://github.com/gorules/zen.git"
 homepage = "https://gorules.io"
 
 [dependencies]
-zen-expression = { path = "../expression", version = "2.1.5" }
+zen-expression = { path = "../expression", version = "2.1.6" }
 thiserror = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }
diff --git a/core/types/CHANGELOG.md b/core/types/CHANGELOG.md
index 1449004c..eaa16792 100644
--- a/core/types/CHANGELOG.md
+++ b/core/types/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.1.6](https://github.com/gorules/zen/compare/zen-types-v2.1.5...zen-types-v2.1.6) (2026-10-21)
+
+
+### Miscellaneous
+
+* **zen-types:** Synchronize core versions
+
 ## [2.1.5](https://github.com/gorules/zen/compare/zen-types-v2.1.4...zen-types-v2.1.5) (2026-10-20)
 
 
diff --git a/core/types/Cargo.toml b/core/types/Cargo.toml
index 09518104..96474992 100644
--- a/core/types/Cargo.toml
+++ b/core/types/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "zen-types"
 description = "Zen Core Types"
-version = "2.1.5"
+version = "2.1.6"
 edition = "2024"
 license = "MIT"
 repository = "https://github.com/gorules/zen.git"