diff --git a/crates/catalog/rest/src/catalog.rs b/crates/catalog/rest/src/catalog.rs
index 851819069..9ba5c6ea3 100644
--- a/crates/catalog/rest/src/catalog.rs
+++ b/crates/catalog/rest/src/catalog.rs
@@ -754,7 +754,8 @@ impl Catalog for RestCatalog {
                 return Err(Error::new(
                     ErrorKind::Unexpected,
                     "CommitFailedException, one or more requirements failed. The client may retry.",
-                ));
+                )
+                .with_retryable(true));
             }
             StatusCode::INTERNAL_SERVER_ERROR => {
                 return Err(Error::new(
diff --git a/crates/iceberg/src/error.rs b/crates/iceberg/src/error.rs
index 37529ee6f..a91d2ed08 100644
--- a/crates/iceberg/src/error.rs
+++ b/crates/iceberg/src/error.rs
@@ -134,6 +134,8 @@ pub struct Error {
 
     source: Option<anyhow::Error>,
     backtrace: Backtrace,
+
+    retryable: bool,
 }
 
 impl Display for Error {
@@ -225,9 +227,17 @@ impl Error {
             // `Backtrace::capture()` will check if backtrace has been enabled
             // internally. It's zero cost if backtrace is disabled.
             backtrace: Backtrace::capture(),
+
+            retryable: false,
         }
     }
 
+    /// Set retryable of the error.
+    pub fn with_retryable(mut self, retryable: bool) -> Self {
+        self.retryable = retryable;
+        self
+    }
+
     /// Add more context in error.
     pub fn with_context(mut self, key: &'static str, value: impl Into<String>) -> Self {
         self.context.push((key, value.into()));
diff --git a/crates/integration_tests/testdata/spark/Dockerfile b/crates/integration_tests/testdata/spark/Dockerfile
index e866a74c9..420edb231 100644
--- a/crates/integration_tests/testdata/spark/Dockerfile
+++ b/crates/integration_tests/testdata/spark/Dockerfile
@@ -27,7 +27,7 @@ ENV PYTHONPATH=$SPARK_HOME/python:$SPARK_HOME/python/lib/py4j-0.10.9.7-src.zip:$
 RUN mkdir -p ${HADOOP_HOME} && mkdir -p ${SPARK_HOME} && mkdir -p /home/iceberg/spark-events
 WORKDIR ${SPARK_HOME}
 
-ENV SPARK_VERSION=3.5.5
+ENV SPARK_VERSION=3.5.6
 ENV ICEBERG_SPARK_RUNTIME_VERSION=3.5_2.12
 ENV ICEBERG_VERSION=1.6.0