diff --git a/rust/Cargo.toml b/rust/Cargo.toml
index 8652fcaad2..745b674de7 100644
--- a/rust/Cargo.toml
+++ b/rust/Cargo.toml
@@ -53,10 +53,15 @@ rusoto_dynamodb = { version = "0.47", default-features = false, optional = true
 rusoto_glue = { version = "0.47", default-features = false, optional = true }
 
 # Datafusion
-datafusion = { version = "21", optional = true }
-datafusion-expr = { version = "21", optional = true }
-datafusion-common = { version = "21", optional = true }
-datafusion-proto = { version = "21", optional = true }
+# Until 21 is released with Arrow 36 support, testing must use the git tree
+#datafusion = { version = "21", optional = true }
+#datafusion-expr = { version = "21", optional = true }
+#datafusion-common = { version = "21", optional = true }
+#datafusion-proto = { version = "21", optional = true }
+datafusion = { git = "https://github.com/apache/arrow-datafusion", optional = true }
+datafusion-expr = { git = "https://github.com/apache/arrow-datafusion", optional = true }
+datafusion-common = { git = "https://github.com/apache/arrow-datafusion", optional = true }
+datafusion-proto = { git = "https://github.com/apache/arrow-datafusion", optional = true }
 
 # NOTE dependencies only for integration tests
 fs_extra = { version = "1.2.0", optional = true }