diff --git a/core-spec/ossie-schema.json b/core-spec/ossie-schema.json
index 30cfac03..5f7868b8 100644
--- a/core-spec/ossie-schema.json
+++ b/core-spec/ossie-schema.json
@@ -37,7 +37,7 @@
   "$defs": {
     "Dialect": {
       "type": "string",
-      "enum": ["ANSI_SQL", "SNOWFLAKE", "MDX", "TABLEAU", "DATABRICKS", "MAQL", "BIGQUERY", "SIGMA", "THOUGHTSPOT", "DAX", "HOLISTICS_AQL", "OSSIE_SQL_2026"],
+      "enum": ["ANSI_SQL", "SNOWFLAKE", "MDX", "TABLEAU", "DATABRICKS", "MAQL", "BIGQUERY", "SIGMA", "THOUGHTSPOT", "DAX", "HOLISTICS_AQL", "OSSIE_SQL_2026", "CLICKHOUSE"],
       "description": "Supported SQL and expression language dialects"
     },
     "Vendor": {
diff --git a/core-spec/spec.md b/core-spec/spec.md
index 99a39e32..b7cd78c7 100644
--- a/core-spec/spec.md
+++ b/core-spec/spec.md
@@ -63,6 +63,7 @@ Dialects in which metric and field expressions can be declared.
 | `DAX` | Data Analysis Expressions (Power BI / Analysis Services) |
 | `HOLISTICS_AQL` | Holistics AQL (Analytical Query Language) |
 | `OSSIE_SQL_2026` | Ossie's portable SQL expression language, defined in `expression_language.md` |
+| `CLICKHOUSE` | ClickHouse SQL |
 
 `OSSIE_SQL_2026` is the only dialect whose semantics this specification defines. The other values
 identify vendor or third-party expression languages. Ossie treats expressions in those dialects as
diff --git a/core-spec/spec.yaml b/core-spec/spec.yaml
index 887ee86d..26f64639 100644
--- a/core-spec/spec.yaml
+++ b/core-spec/spec.yaml
@@ -43,6 +43,7 @@ dialects:
   - "DAX"                   # Data Analysis Expressions (Power BI / Analysis Services)
   - "HOLISTICS_AQL"         # Holistics AQL (Analytical Query Language)
   - "OSSIE_SQL_2026"        # Ossie portable SQL expression language (see expression_language.md)
+  - "CLICKHOUSE"            # ClickHouse SQL
 
 # Supported logical data types for fields and metrics
 # Auto-generated from ossie-schema.json ($defs.DataType.enum).
diff --git a/python/src/ossie/models.py b/python/src/ossie/models.py
index 50b87d6c..2a36b677 100644
--- a/python/src/ossie/models.py
+++ b/python/src/ossie/models.py
@@ -37,6 +37,7 @@ class OssieDialect(str, Enum):
     DAX = "DAX"
     HOLISTICS_AQL = "HOLISTICS_AQL"
     OSSIE_SQL_2026 = "OSSIE_SQL_2026"
+    CLICKHOUSE = "CLICKHOUSE"
 
 
 class OssieDataType(str, Enum):
diff --git a/scripts/generate-spec-types.py b/scripts/generate-spec-types.py
index 925aab9d..65c65246 100755
--- a/scripts/generate-spec-types.py
+++ b/scripts/generate-spec-types.py
@@ -68,6 +68,7 @@
             "DAX": "Data Analysis Expressions (Power BI / Analysis Services)",
             "HOLISTICS_AQL": "Holistics AQL (Analytical Query Language)",
             "OSSIE_SQL_2026": "Ossie portable SQL expression language (see expression_language.md)",
+            "CLICKHOUSE": "ClickHouse SQL",
         },
     },
     {