diff --git a/datafusion-cli/Cargo.lock b/datafusion-cli/Cargo.lock
index 23b4700ea8f6c..fbd6cc01ad344 100644
--- a/datafusion-cli/Cargo.lock
+++ b/datafusion-cli/Cargo.lock
@@ -499,9 +499,9 @@ dependencies = [
 
 [[package]]
 name = "aws-runtime"
-version = "1.5.3"
+version = "1.5.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b16d1aa50accc11a4b4d5c50f7fb81cc0cf60328259c587d0e6b0f11385bde46"
+checksum = "bee7643696e7fdd74c10f9eb42848a87fe469d35eae9c3323f80aa98f350baac"
 dependencies = [
  "aws-credential-types",
  "aws-sigv4",
@@ -591,9 +591,9 @@ dependencies = [
 
 [[package]]
 name = "aws-sigv4"
-version = "1.2.6"
+version = "1.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7d3820e0c08d0737872ff3c7c1f21ebbb6693d832312d6152bf18ef50a5471c2"
+checksum = "690118821e46967b3c4501d67d7d52dd75106a9c54cf36cefa1985cedbe94e05"
 dependencies = [
  "aws-credential-types",
  "aws-smithy-http",
@@ -752,9 +752,9 @@ dependencies = [
 
 [[package]]
 name = "aws-types"
-version = "1.3.3"
+version = "1.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5221b91b3e441e6675310829fd8984801b772cb1546ef6c0e54dec9f1ac13fef"
+checksum = "b0df5a18c4f951c645300d365fec53a61418bcf4650f604f85fe2a665bfaa0c2"
 dependencies = [
  "aws-credential-types",
  "aws-smithy-async",
@@ -1599,7 +1599,6 @@ dependencies = [
  "datafusion-execution",
  "datafusion-expr",
  "datafusion-expr-common",
- "datafusion-functions-aggregate",
  "datafusion-physical-expr",
  "datafusion-physical-expr-common",
  "datafusion-physical-plan",
diff --git a/datafusion/expr/src/test/function_stub.rs b/datafusion/expr/src/test/function_stub.rs
index d597326be07a2..71ab1ad6ef9b2 100644
--- a/datafusion/expr/src/test/function_stub.rs
+++ b/datafusion/expr/src/test/function_stub.rs
@@ -252,6 +252,10 @@ impl AggregateUDFImpl for Count {
         Ok(DataType::Int64)
     }
 
+    fn is_nullable(&self) -> bool {
+        false
+    }
+
     fn state_fields(&self, _args: StateFieldsArgs) -> Result<Vec<Field>> {
         not_impl_err!("no impl for stub")
     }
diff --git a/datafusion/physical-optimizer/Cargo.toml b/datafusion/physical-optimizer/Cargo.toml
index 338d37671f969..40074e8eecd88 100644
--- a/datafusion/physical-optimizer/Cargo.toml
+++ b/datafusion/physical-optimizer/Cargo.toml
@@ -41,7 +41,6 @@ datafusion-common = { workspace = true, default-features = true }
 datafusion-execution = { workspace = true }
 datafusion-expr = { workspace = true }
 datafusion-expr-common = { workspace = true, default-features = true }
-datafusion-functions-aggregate = { workspace = true }
 datafusion-physical-expr = { workspace = true }
 datafusion-physical-expr-common = { workspace = true }
 datafusion-physical-plan = { workspace = true }
diff --git a/datafusion/physical-optimizer/src/test_utils.rs b/datafusion/physical-optimizer/src/test_utils.rs
index dc68f1dc97641..9f0b5ddf6f403 100644
--- a/datafusion/physical-optimizer/src/test_utils.rs
+++ b/datafusion/physical-optimizer/src/test_utils.rs
@@ -25,8 +25,8 @@ use std::fmt::Formatter;
 use arrow_schema::{Schema, SchemaRef, SortOptions};
 use datafusion_common::tree_node::{Transformed, TransformedResult, TreeNode};
 use datafusion_common::{JoinType, Result};
+use datafusion_expr::test::function_stub::count_udaf;
 use datafusion_expr::{WindowFrame, WindowFunctionDefinition};
-use datafusion_functions_aggregate::count::count_udaf;
 use datafusion_physical_expr::expressions::col;
 use datafusion_physical_expr::PhysicalExpr;
 use datafusion_physical_expr::PhysicalSortExpr;