diff --git a/Cargo.lock b/Cargo.lock
index 2f188ef34..42d8c6cfd 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2770,7 +2770,7 @@ checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
 [[package]]
 name = "orc-rust"
 version = "0.7.0"
-source = "git+https://github.com/auron-project/datafusion-orc.git?rev=9beb12c#9beb12cbff3de5a6b8b4f6e4f4b602f9a762c9c7"
+source = "git+https://github.com/auron-project/datafusion-orc.git?rev=59bcd29#59bcd29a4c756ba91e47b11aab1b9312130580eb"
 dependencies = [
  "arrow",
  "async-trait",
diff --git a/Cargo.toml b/Cargo.toml
index dd52ef4bb..fa08d38af 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -206,7 +206,7 @@ datafusion-execution = { git = "https://github.com/auron-project/datafusion.git"
 datafusion-optimizer = { git = "https://github.com/auron-project/datafusion.git", rev = "9034aeffb"}
 datafusion-physical-expr = { git = "https://github.com/auron-project/datafusion.git", rev = "9034aeffb"}
 datafusion-spark = { git = "https://github.com/auron-project/datafusion.git", rev = "9034aeffb"}
-orc-rust = { git = "https://github.com/auron-project/datafusion-orc.git", rev = "9beb12c"}
+orc-rust = { git = "https://github.com/auron-project/datafusion-orc.git", rev = "59bcd29"}
 
 # arrow: branch=v55.2.0-blaze
 arrow = { git = "https://github.com/auron-project/arrow-rs.git", rev = "5de02520c"}
diff --git a/spark-extension-shims-spark/src/test/scala/org/apache/auron/AuronQuerySuite.scala b/spark-extension-shims-spark/src/test/scala/org/apache/auron/AuronQuerySuite.scala
index 56119a7cb..cf2943061 100644
--- a/spark-extension-shims-spark/src/test/scala/org/apache/auron/AuronQuerySuite.scala
+++ b/spark-extension-shims-spark/src/test/scala/org/apache/auron/AuronQuerySuite.scala
@@ -1014,4 +1014,23 @@ class AuronQuerySuite extends AuronQueryTest with BaseAuronSQLSuite with AuronSQ
         |FROM t_filter_agg_2289""".stripMargin)
     }
   }
+
+  test("test not null filter for orc table") {
+    withTable("orc_string_filter") {
+      sql("create table orc_string_filter(id int, b string) using orc")
+      sql("insert into orc_string_filter values (1, 'abc'), (2, null), (3, 'def')")
+      checkSparkAnswerAndOperator("select * from orc_string_filter where b is not null")
+    }
+  }
+
+  test("test string filter for orc table with truncated stats") {
+    withTable("orc_string_trunc") {
+      sql("create table orc_string_trunc(id int, b string) using orc")
+      val longA = "a" * 2000 // > 1024 bytes -> min/max truncated (lower_bound set)
+      val longB = "b" * 2000 // > 1024 bytes -> upper_bound set
+      sql(s"insert into orc_string_trunc values (1, '$longA'), (2, '$longB'), (3, 'mid')")
+      checkSparkAnswerAndOperator(s"select * from orc_string_trunc where b = '$longA'")
+      checkSparkAnswerAndOperator("select * from orc_string_trunc where b > 'a'")
+    }
+  }
 }