diff --git a/datafusion/proto/src/generated/pbjson.rs b/datafusion/proto/src/generated/pbjson.rs
index 7a366c08ad241..8984f02569a30 100644
--- a/datafusion/proto/src/generated/pbjson.rs
+++ b/datafusion/proto/src/generated/pbjson.rs
@@ -22113,7 +22113,6 @@ impl serde::Serialize for ScalarFunction {
             Self::Signum => "Signum",
             Self::Sin => "Sin",
             Self::Sqrt => "Sqrt",
-            Self::Tan => "Tan",
             Self::Trunc => "Trunc",
             Self::Array => "Array",
             Self::BitLength => "BitLength",
@@ -22164,7 +22163,6 @@ impl serde::Serialize for ScalarFunction {
             Self::Atanh => "Atanh",
             Self::Sinh => "Sinh",
             Self::Cosh => "Cosh",
-            Self::Tanh => "Tanh",
             Self::Pi => "Pi",
             Self::Degrees => "Degrees",
             Self::Radians => "Radians",
@@ -22232,7 +22230,6 @@ impl<'de> serde::Deserialize<'de> for ScalarFunction {
             "Signum",
             "Sin",
             "Sqrt",
-            "Tan",
             "Trunc",
             "Array",
             "BitLength",
@@ -22283,7 +22280,6 @@ impl<'de> serde::Deserialize<'de> for ScalarFunction {
             "Atanh",
             "Sinh",
             "Cosh",
-            "Tanh",
             "Pi",
             "Degrees",
             "Radians",
@@ -22380,7 +22376,6 @@ impl<'de> serde::Deserialize<'de> for ScalarFunction {
                     "Signum" => Ok(ScalarFunction::Signum),
                     "Sin" => Ok(ScalarFunction::Sin),
                     "Sqrt" => Ok(ScalarFunction::Sqrt),
-                    "Tan" => Ok(ScalarFunction::Tan),
                     "Trunc" => Ok(ScalarFunction::Trunc),
                     "Array" => Ok(ScalarFunction::Array),
                     "BitLength" => Ok(ScalarFunction::BitLength),
@@ -22431,7 +22426,6 @@ impl<'de> serde::Deserialize<'de> for ScalarFunction {
                     "Atanh" => Ok(ScalarFunction::Atanh),
                     "Sinh" => Ok(ScalarFunction::Sinh),
                     "Cosh" => Ok(ScalarFunction::Cosh),
-                    "Tanh" => Ok(ScalarFunction::Tanh),
                     "Pi" => Ok(ScalarFunction::Pi),
                     "Degrees" => Ok(ScalarFunction::Degrees),
                     "Radians" => Ok(ScalarFunction::Radians),