diff --git a/plugins/python/ica_metering_exporter/pyproject.toml b/plugins/python/ica_metering_exporter/pyproject.toml
index 08852d1..5547840 100644
--- a/plugins/python/ica_metering_exporter/pyproject.toml
+++ b/plugins/python/ica_metering_exporter/pyproject.toml
@@ -10,7 +10,7 @@ authors = [{ name = "ICA Team" }]
 license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
-dependencies = ["cpex>=0.1.3,<0.2", "httpx>=0.27,<1", "PyJWT>=2.8,<3"]
+dependencies = ["cpex==0.1.3", "httpx>=0.27,<1", "PyJWT>=2.8,<3"]
 classifiers = [
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
diff --git a/plugins/rust/python-package/encoded_exfil_detection/pyproject.toml b/plugins/rust/python-package/encoded_exfil_detection/pyproject.toml
index cfcf562..bda3e3a 100644
--- a/plugins/rust/python-package/encoded_exfil_detection/pyproject.toml
+++ b/plugins/rust/python-package/encoded_exfil_detection/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
     "pydantic>=2.13.5,<3",
 ]
diff --git a/plugins/rust/python-package/output_length_guard/pyproject.toml b/plugins/rust/python-package/output_length_guard/pyproject.toml
index 35e81dd..56a4b95 100644
--- a/plugins/rust/python-package/output_length_guard/pyproject.toml
+++ b/plugins/rust/python-package/output_length_guard/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
 ]
 classifiers = [
diff --git a/plugins/rust/python-package/pii_filter/pyproject.toml b/plugins/rust/python-package/pii_filter/pyproject.toml
index 990032c..9acc62c 100644
--- a/plugins/rust/python-package/pii_filter/pyproject.toml
+++ b/plugins/rust/python-package/pii_filter/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
 ]
 classifiers = [
diff --git a/plugins/rust/python-package/rate_limiter/pyproject.toml b/plugins/rust/python-package/rate_limiter/pyproject.toml
index 1c24b4c..6b8214d 100644
--- a/plugins/rust/python-package/rate_limiter/pyproject.toml
+++ b/plugins/rust/python-package/rate_limiter/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
 ]
 classifiers = [
diff --git a/plugins/rust/python-package/retry_with_backoff/pyproject.toml b/plugins/rust/python-package/retry_with_backoff/pyproject.toml
index 31382a7..6e38780 100644
--- a/plugins/rust/python-package/retry_with_backoff/pyproject.toml
+++ b/plugins/rust/python-package/retry_with_backoff/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
     "pydantic>=2.13.5,<3",
 ]
diff --git a/plugins/rust/python-package/secrets_detection/pyproject.toml b/plugins/rust/python-package/secrets_detection/pyproject.toml
index f3d4c3f..740da07 100644
--- a/plugins/rust/python-package/secrets_detection/pyproject.toml
+++ b/plugins/rust/python-package/secrets_detection/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
 ]
 classifiers = [
diff --git a/plugins/rust/python-package/sql_sanitizer/pyproject.toml b/plugins/rust/python-package/sql_sanitizer/pyproject.toml
index 2788b6a..dd0e58f 100644
--- a/plugins/rust/python-package/sql_sanitizer/pyproject.toml
+++ b/plugins/rust/python-package/sql_sanitizer/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
 ]
 classifiers = [
diff --git a/plugins/rust/python-package/url_reputation/pyproject.toml b/plugins/rust/python-package/url_reputation/pyproject.toml
index 624e7e5..3c92321 100644
--- a/plugins/rust/python-package/url_reputation/pyproject.toml
+++ b/plugins/rust/python-package/url_reputation/pyproject.toml
@@ -11,7 +11,7 @@ license = { text = "Apache-2.0" }
 readme = "README.md"
 requires-python = ">=3.11"
 dependencies = [
-    "cpex>=0.1.3,<0.2",
+    "cpex==0.1.3",
     "mcp<2",
     "pydantic>=2.13.5,<3",
 ]
diff --git a/pyproject.toml b/pyproject.toml
index c922f2d..5bad30c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ requires-python = ">=3.11"
 package = false
 exclude-newer = "10 days"
 constraint-dependencies = [
-    "cpex>=0.1.0,<0.2",
+    "cpex==0.1.3",
     "maturin>=1.13.3,<2.0",
     "mcp<2",
     "pydantic>=2.13.5,<3",
diff --git a/uv.lock b/uv.lock
index 447eccd..477766c 100644
--- a/uv.lock
+++ b/uv.lock
@@ -11,7 +11,7 @@ resolution-markers = [
 ]
 
 [options]
-exclude-newer = "0001-01-01T00:00:00Z" # This has no effect and is included for backwards compatibility when using relative exclude-newer values.
+exclude-newer = "2026-09-01T14:08:50.6713914Z"
 exclude-newer-span = "P10D"
 
 [manifest]
@@ -28,7 +28,7 @@ members = [
     "cpex-url-reputation",
 ]
 constraints = [
-    { name = "cpex", specifier = ">=0.1.0,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "maturin", specifier = ">=1.13.3,<2.0" },
     { name = "mcp", specifier = "<2" },
     { name = "pydantic", specifier = ">=2.13.5,<3" },
@@ -490,7 +490,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
     { name = "pydantic", specifier = ">=2.13.5,<3" },
 ]
@@ -523,7 +523,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "httpx", specifier = ">=0.27,<1" },
     { name = "pyjwt", specifier = ">=2.8,<3" },
 ]
@@ -581,7 +581,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
 ]
 
@@ -615,7 +615,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
 ]
 
@@ -646,7 +646,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
     { name = "pydantic", specifier = ">=2.13.5,<3" },
 ]
@@ -678,7 +678,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
 ]
 
@@ -708,7 +708,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
 ]
 
@@ -738,7 +738,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "cpex", specifier = ">=0.1.3,<0.2" },
+    { name = "cpex", specifier = "==0.1.3" },
     { name = "mcp", specifier = "<2" },
     { name = "pydantic", specifier = ">=2.13.5,<3" },
 ]