diff --git a/Cargo.lock b/Cargo.lock
index cdfbbd86ab0..343ae2edd1b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -817,7 +817,7 @@ checksum = "25c7df09945d65ea8d70b3321547ed414bbc540aad5bac6883d021b970f35b04"
 [[package]]
 name = "fastfield_codecs"
 version = "0.1.0"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 dependencies = [
  "tantivy-bitpacker",
  "tantivy-common",
@@ -1943,7 +1943,7 @@ dependencies = [
 [[package]]
 name = "ownedbytes"
 version = "0.2.0"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 dependencies = [
  "stable_deref_trait",
 ]
@@ -2476,7 +2476,6 @@ version = "0.2.1"
 dependencies = [
  "anyhow",
  "async-trait",
- "chrono",
  "crossbeam",
  "futures",
  "once_cell",
@@ -2487,6 +2486,7 @@ dependencies = [
  "tantivy",
  "tempfile",
  "thiserror",
+ "time 0.3.9",
  "tokio",
  "tracing",
  "uuid 0.8.2",
@@ -2551,6 +2551,7 @@ dependencies = [
  "tantivy",
  "tempfile",
  "thiserror",
+ "time 0.3.9",
  "tokio",
  "tokio-stream",
  "tracing",
@@ -3606,14 +3607,13 @@ dependencies = [
 [[package]]
 name = "tantivy"
 version = "0.17.0"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 dependencies = [
  "async-trait",
  "base64",
  "bitpacking",
  "byteorder",
  "census",
- "chrono",
  "crc32fast",
  "crossbeam",
  "downcast-rs",
@@ -3650,6 +3650,7 @@ dependencies = [
  "tantivy-query-grammar",
  "tempfile",
  "thiserror",
+ "time 0.3.9",
  "uuid 0.8.2",
  "winapi 0.3.9",
 ]
@@ -3657,12 +3658,12 @@ dependencies = [
 [[package]]
 name = "tantivy-bitpacker"
 version = "0.1.1"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 
 [[package]]
 name = "tantivy-common"
 version = "0.2.0"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 dependencies = [
  "byteorder",
  "ownedbytes",
@@ -3682,7 +3683,7 @@ dependencies = [
 [[package]]
 name = "tantivy-query-grammar"
 version = "0.15.0"
-source = "git+https://github.com/quickwit-oss/tantivy?rev=46d5de9#46d5de920dd1ac86fa7a74baa0debd933bcb6574"
+source = "git+https://github.com/quickwit-oss/tantivy?rev=447811c#447811c1117a4c87182077958d09761574df5e21"
 dependencies = [
  "combine",
  "once_cell",
@@ -3816,6 +3817,7 @@ dependencies = [
  "itoa",
  "libc",
  "num_threads",
+ "serde",
 ]
 
 [[package]]
diff --git a/quickwit-core/Cargo.toml b/quickwit-core/Cargo.toml
index aa61d422197..0d0afe1d103 100644
--- a/quickwit-core/Cargo.toml
+++ b/quickwit-core/Cargo.toml
@@ -24,7 +24,7 @@ quickwit-storage = { version = "0.2.1", path = "../quickwit-storage" }
 tokio = { version = "1", features = ["full"] }
 tokio-util = { version = "0.7", features = ["full"] }
 rand = "0.8"
-tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="46d5de9", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="447811c", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
 futures = "0.3"
 futures-util = { version = "0.3.1", default-features = false }
 uuid = "0.8"
diff --git a/quickwit-directories/Cargo.toml b/quickwit-directories/Cargo.toml
index e54dd34c02d..d6176c2302d 100644
--- a/quickwit-directories/Cargo.toml
+++ b/quickwit-directories/Cargo.toml
@@ -16,7 +16,7 @@ futures = "0.3"
 serde = "1"
 serde_cbor = "0.11"
 serde_json = "1"
-tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="46d5de9", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="447811c", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
 quickwit-storage = { version = "0.2.1", path = "../quickwit-storage" }
 uuid = "0.8"
 once_cell = "1"
@@ -25,7 +25,7 @@ tracing = "0.1.29"
 thiserror = "1"
 anyhow = "1"
 async-trait = "0.1"
-chrono = "0.4"
+time = { version = "0.3.7", features = ["std"] }
 
 [dev-dependencies]
 tempfile = '3'
diff --git a/quickwit-directories/src/debug_proxy_directory.rs b/quickwit-directories/src/debug_proxy_directory.rs
index b6f5f8ede7d..d42fe3a5176 100644
--- a/quickwit-directories/src/debug_proxy_directory.rs
+++ b/quickwit-directories/src/debug_proxy_directory.rs
@@ -24,10 +24,10 @@ use std::time::{Duration, Instant};
 use std::{fmt, io, mem};
 
 use async_trait::async_trait;
-use tantivy::chrono::{DateTime, Utc};
 use tantivy::directory::error::OpenReadError;
 use tantivy::directory::{FileHandle, OwnedBytes};
 use tantivy::{Directory, HasLen};
+use time::OffsetDateTime;
 
 use crate::StorageDirectory;
 
@@ -63,14 +63,14 @@ pub struct ReadOperation {
     pub offset: usize,
     /// The number of bytes fetched
     pub num_bytes: usize,
-    /// The date at which the operation was performed.
-    pub start_date: DateTime<Utc>,
+    /// The date at which the operation was performed (UTC timezone).
+    pub start_date: OffsetDateTime,
     /// The elapsed time to run the read operatioon.
     pub duration: Duration,
 }
 
 struct ReadOperationBuilder {
-    start_date: DateTime<Utc>,
+    start_date: OffsetDateTime,
     start_instant: Instant,
     path: PathBuf,
     offset: usize,
@@ -79,7 +79,7 @@ struct ReadOperationBuilder {
 impl ReadOperationBuilder {
     pub fn new(path: &Path) -> Self {
         let start_instant = Instant::now();
-        let start_date = Utc::now();
+        let start_date = OffsetDateTime::now_utc();
         ReadOperationBuilder {
             start_date,
             start_instant,
diff --git a/quickwit-doc-mapper/Cargo.toml b/quickwit-doc-mapper/Cargo.toml
index ea0f3b1022f..09bc3f96160 100644
--- a/quickwit-doc-mapper/Cargo.toml
+++ b/quickwit-doc-mapper/Cargo.toml
@@ -19,8 +19,8 @@ once_cell = "1.10"
 regex = "1"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-tantivy = { git = "https://github.com/quickwit-oss/tantivy", rev = "46d5de9", default-features = false, features = ["mmap", "lz4-compression", "quickwit"] }
-tantivy-query-grammar = { git = "https://github.com/quickwit-oss/tantivy/", rev = "46d5de9" }
+tantivy = { git = "https://github.com/quickwit-oss/tantivy", rev = "447811c", default-features = false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy-query-grammar = { git = "https://github.com/quickwit-oss/tantivy/", rev = "447811c" }
 thiserror = "1.0"
 tracing = "0.1.29"
 typetag = "0.1"
diff --git a/quickwit-doc-mapper/src/default_doc_mapper/default_mapper.rs b/quickwit-doc-mapper/src/default_doc_mapper/default_mapper.rs
index bcc45076871..3cdcdd427dd 100644
--- a/quickwit-doc-mapper/src/default_doc_mapper/default_mapper.rs
+++ b/quickwit-doc-mapper/src/default_doc_mapper/default_mapper.rs
@@ -475,6 +475,7 @@ mod tests {
         {
             "timestamp": 1586960586000,
             "body": "20200415T072306-0700 INFO This is a great log",
+            "response_date2": "2021-12-19T16:39:57+00:00",
             "response_date": "2021-12-19T16:39:57Z",
             "response_time": 2.3,
             "response_payload": "YWJj",
@@ -490,7 +491,7 @@ mod tests {
     const EXPECTED_JSON_PATHS_AND_VALUES: &str = r#"{
             "timestamp": [1586960586000],
             "body": ["20200415T072306-0700 INFO This is a great log"],
-            "response_date": ["2021-12-19T16:39:57+00:00"],
+            "response_date": ["2021-12-19T16:39:57Z"],
             "response_time": [2.3],
             "response_payload": [[97,98,99]],
             "owner": ["foo"],
@@ -567,6 +568,12 @@ mod tests {
                     .iter()
                     .map(|expected_value| format!("{}", expected_value))
                     .any(|expected_value| expected_value == value);
+                if !is_value_in_expected_values {
+                    panic!(
+                        "Could not find: {:?} in {:?}",
+                        value, expected_json_paths_and_values
+                    );
+                }
                 assert!(is_value_in_expected_values);
             }
         });
diff --git a/quickwit-doc-mapper/src/default_doc_mapper/field_mapping_entry.rs b/quickwit-doc-mapper/src/default_doc_mapper/field_mapping_entry.rs
index 7c6897db91b..9c743bba0a7 100644
--- a/quickwit-doc-mapper/src/default_doc_mapper/field_mapping_entry.rs
+++ b/quickwit-doc-mapper/src/default_doc_mapper/field_mapping_entry.rs
@@ -20,7 +20,6 @@
 use std::convert::TryFrom;
 
 use anyhow::bail;
-use chrono::{FixedOffset, Utc};
 use itertools::{process_results, Itertools};
 use serde::{Deserialize, Serialize};
 use serde_json::{self, Value as JsonValue};
@@ -28,6 +27,9 @@ use tantivy::schema::{
     BytesOptions, Cardinality, DocParsingError as TantivyDocParser, FieldType, IndexRecordOption,
     NumericOptions, TextFieldIndexing, TextOptions, Value,
 };
+use tantivy::time::format_description::well_known::Rfc3339;
+use tantivy::time::OffsetDateTime;
+use tantivy::DateTime;
 use thiserror::Error;
 
 use super::{default_as_true, FieldMappingType};
@@ -335,17 +337,16 @@ impl FieldMappingEntry {
                 )?
             }
             JsonValue::String(value_as_str) => {
-                let dt_with_fixed_tz: chrono::DateTime<FixedOffset> =
-                    chrono::DateTime::parse_from_rfc3339(&value_as_str).map_err(|err| {
+                let date_time_utc = DateTime::new_utc(
+                    OffsetDateTime::parse(&value_as_str, &Rfc3339).map_err(|err| {
                         DocParsingError::ValueError(
                             self.name.clone(),
                             format!("Expected RFC 3339 date, got '{}'. {:?}", value_as_str, err),
                         )
-                    })?;
-                vec![(
-                    FieldPath::new(&self.name),
-                    Value::Date(dt_with_fixed_tz.with_timezone(&Utc)),
-                )]
+                    })?,
+                );
+
+                vec![(FieldPath::new(&self.name), Value::Date(date_time_utc))]
             }
             JsonValue::Null => {
                 vec![]
@@ -747,10 +748,11 @@ impl From<TantivyDocParser> for DocParsingError {
 #[cfg(test)]
 mod tests {
     use anyhow::bail;
-    use chrono::{NaiveDate, NaiveDateTime, NaiveTime, TimeZone, Utc};
     use matches::matches;
     use serde_json::json;
     use tantivy::schema::{Cardinality, Value};
+    use tantivy::time::{Date, Month, PrimitiveDateTime, Time};
+    use tantivy::DateTime;
 
     use super::FieldMappingEntry;
     use crate::default_doc_mapper::FieldMappingType;
@@ -1332,11 +1334,14 @@ mod tests {
 
         // Successful parsing
         let parsed_value = entry.parse(json!("2021-12-19T16:39:57-01:00"))?;
-        let datetime = NaiveDateTime::new(
-            NaiveDate::from_ymd(2021, 12, 19),
-            NaiveTime::from_hms(17, 39, 57),
+
+        let datetime = PrimitiveDateTime::new(
+            Date::from_calendar_date(2021, Month::December, 19).unwrap(),
+            Time::from_hms(17, 39, 57).unwrap(),
         );
-        let datetime_utc = Utc.from_utc_datetime(&datetime);
+        // let datetime = datetime!(2021-12-19 17:39:57);
+
+        let datetime_utc = DateTime::new_primitive(datetime); // Utc.from_utc_datetime(&datetime);
         assert_eq!(parsed_value.len(), 1);
         assert_eq!(parsed_value[0].1, Value::Date(datetime_utc));
 
diff --git a/quickwit-indexing/Cargo.toml b/quickwit-indexing/Cargo.toml
index 2381cb46dcb..e3a8f1f9dc9 100644
--- a/quickwit-indexing/Cargo.toml
+++ b/quickwit-indexing/Cargo.toml
@@ -34,7 +34,7 @@ rusoto_kinesis = { version = "0.47", default-features = false, features = ["rust
 serde = "1"
 serde_json = "1"
 serde_yaml = "0.8"
-tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="46d5de9", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="447811c", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
 tempfile = "3.3"
 thiserror = "1"
 tokio = { version = "1", features = ["sync"] }
@@ -42,6 +42,8 @@ tracing = "0.1.29"
 ulid = "0.5"
 tokio-stream = "0.1"
 arc-swap = "1.4"
+time = { version = "0.3.7", features = ["std"] }
+
 
 [features]
 kafka = ["rdkafka"]
diff --git a/quickwit-indexing/src/actors/uploader.rs b/quickwit-indexing/src/actors/uploader.rs
index 2c02444f622..abeb42ea6a5 100644
--- a/quickwit-indexing/src/actors/uploader.rs
+++ b/quickwit-indexing/src/actors/uploader.rs
@@ -31,7 +31,7 @@ use itertools::Itertools;
 use quickwit_actors::{Actor, ActorContext, ActorExitStatus, Handler, Mailbox, QueueCapacity};
 use quickwit_metastore::{Metastore, SplitMetadata};
 use quickwit_storage::SplitPayloadBuilder;
-use tantivy::chrono::Utc;
+use time::OffsetDateTime;
 use tokio::sync::{OwnedSemaphorePermit, Semaphore};
 use tracing::{info, info_span, warn, Instrument, Span};
 
@@ -194,7 +194,7 @@ fn create_split_metadata(split: &PackagedSplit, footer_offsets: Range<u64>) -> S
         num_docs: split.num_docs as usize,
         time_range: split.time_range.clone(),
         original_size_in_bytes: split.size_in_bytes,
-        create_timestamp: Utc::now().timestamp(),
+        create_timestamp: OffsetDateTime::now_utc().unix_timestamp(),
         tags: split.tags.clone(),
         demux_num_ops: split.demux_num_ops,
         footer_offsets,
diff --git a/quickwit-indexing/src/garbage_collection.rs b/quickwit-indexing/src/garbage_collection.rs
index eaa1eaeae4e..eb532980012 100644
--- a/quickwit-indexing/src/garbage_collection.rs
+++ b/quickwit-indexing/src/garbage_collection.rs
@@ -24,8 +24,8 @@ use futures::StreamExt;
 use quickwit_actors::ActorContext;
 use quickwit_metastore::{Metastore, MetastoreError, SplitMetadata, SplitState};
 use quickwit_storage::StorageError;
-use tantivy::chrono::Utc;
 use thiserror::Error;
+use time::OffsetDateTime;
 use tracing::error;
 
 use crate::actors::GarbageCollector;
@@ -83,7 +83,8 @@ pub async fn run_garbage_collect(
     ctx_opt: Option<&ActorContext<GarbageCollector>>,
 ) -> anyhow::Result<Vec<FileEntry>> {
     // Select staged splits with staging timestamp older than grace period timestamp.
-    let grace_period_timestamp = Utc::now().timestamp() - staged_grace_period.as_secs() as i64;
+    let grace_period_timestamp =
+        OffsetDateTime::now_utc().unix_timestamp() - staged_grace_period.as_secs() as i64;
 
     let deletable_staged_splits: Vec<SplitMetadata> = metastore
         .list_splits(index_id, SplitState::Staged, None, None)
@@ -123,7 +124,8 @@ pub async fn run_garbage_collect(
         .await?;
 
     // We wait another 2 minutes until the split is actually deleted.
-    let grace_period_deletion = Utc::now().timestamp() - deletion_grace_period.as_secs() as i64;
+    let grace_period_deletion =
+        OffsetDateTime::now_utc().unix_timestamp() - deletion_grace_period.as_secs() as i64;
     let splits_to_delete = metastore
         .list_splits(index_id, SplitState::MarkedForDeletion, None, None)
         .await?
diff --git a/quickwit-search/Cargo.toml b/quickwit-search/Cargo.toml
index 1b303671a2b..1d67563dd4e 100644
--- a/quickwit-search/Cargo.toml
+++ b/quickwit-search/Cargo.toml
@@ -33,7 +33,7 @@ once_cell = "1"
 opentelemetry = "0.17"
 tracing-opentelemetry = "0.17"
 rayon = "1"
-tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="46d5de9", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="447811c", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
 
 [dependencies.quickwit-cluster]
 path = '../quickwit-cluster'
diff --git a/quickwit-storage/Cargo.toml b/quickwit-storage/Cargo.toml
index 29c0f1fa0de..cc310422110 100644
--- a/quickwit-storage/Cargo.toml
+++ b/quickwit-storage/Cargo.toml
@@ -20,7 +20,7 @@ futures = '0.3'
 serde_json = "1"
 base64 = '0.13'
 tracing = "0.1.29"
-tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="46d5de9", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
+tantivy = { git= "https://github.com/quickwit-oss/tantivy", rev="447811c", default-features=false, features = ["mmap", "lz4-compression", "quickwit"] }
 once_cell = '1'
 regex = '1'
 thiserror = '1'