diff --git a/HISTORY.rst b/HISTORY.rst
index 8995ece..24833df 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -5,6 +5,14 @@ History
 Unreleased / master
 -------------------
 
+4.4.0 (2025-29-01)
+-------------------
+
+New or modified tables and columns:
+
+- Add ``binnedPixelSize`` column to the ``ParticleClassificationGroup`` table
+- Add ``gridSquareId`` column to the ``Tomogram`` table
+
 4.3.0 (2024-12-05)
 -------------------
 
diff --git a/schemas/ispyb/lookups.sql b/schemas/ispyb/lookups.sql
index 2abf64a..ca7fead 100644
--- a/schemas/ispyb/lookups.sql
+++ b/schemas/ispyb/lookups.sql
@@ -11,7 +11,7 @@
 /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
 
 /*!40000 ALTER TABLE `AdminVar` DISABLE KEYS */;
-INSERT INTO `AdminVar` (`varId`, `name`, `value`) VALUES (4,'schemaVersion','4.3.0');
+INSERT INTO `AdminVar` (`varId`, `name`, `value`) VALUES (4,'schemaVersion','4.4.0');
 /*!40000 ALTER TABLE `AdminVar` ENABLE KEYS */;
 
 /*!40000 ALTER TABLE `SchemaStatus` DISABLE KEYS */;
@@ -270,7 +270,10 @@ INSERT INTO `SchemaStatus` (`schemaStatusId`, `scriptName`, `schemaStatus`, `rec
 (298,'2024_09_25_AutoProcProgram_processingPipelineId.sql','DONE','2024-12-05 13:27:18'),
 (299,'2024_10_15_BLSample_unique_index.sql','DONE','2024-12-05 13:27:18'),
 (300,'2024_12_04_AutoProcProgramAttachment_deleted.sql','DONE','2024-12-05 13:27:18'),
-(301,'2024_12_05_AdminVar_bump_version.sql','DONE','2024-12-05 13:27:18');
+(301,'2024_12_05_AdminVar_bump_version.sql','DONE','2024-12-05 13:27:18'),
+(302,'2025_01_08_ParticleClassificationGroup_binnedPixelSize.sql','DONE','2025-01-29 10:29:27'),
+(303,'2025_01_24_Tomogram_gridSquare.sql','DONE','2025-01-29 10:29:27'),
+(304,'2025_01_29_AdminVar_bump_version.sql','DONE','2025-01-29 10:29:27');
 /*!40000 ALTER TABLE `SchemaStatus` ENABLE KEYS */;
 
 /*!40000 ALTER TABLE `ComponentType` DISABLE KEYS */;
diff --git a/schemas/ispyb/tables.sql b/schemas/ispyb/tables.sql
index d68fca8..538b933 100644
--- a/schemas/ispyb/tables.sql
+++ b/schemas/ispyb/tables.sql
@@ -2409,6 +2409,7 @@ CREATE TABLE `ParticleClassificationGroup` (
   `numberOfParticlesPerBatch` int(10) unsigned DEFAULT NULL COMMENT 'total number of particles per batch (a large integer)',
   `numberOfClassesPerBatch` int(10) unsigned DEFAULT NULL,
   `symmetry` varchar(20) DEFAULT NULL,
+  `binnedPixelSize` float DEFAULT NULL COMMENT 'Binned pixel size. Unit: Angstroms',
   PRIMARY KEY (`particleClassificationGroupId`),
   KEY `ParticleClassificationGroup_fk_particlePickerId` (`particlePickerId`),
   KEY `ParticleClassificationGroup_fk_programId` (`programId`),
@@ -3566,11 +3567,14 @@ CREATE TABLE `Tomogram` (
   `projXZ` varchar(255) DEFAULT NULL COMMENT 'XZ projection file',
   `recordTimeStamp` datetime DEFAULT current_timestamp() COMMENT 'Creation or last update date/time',
   `globalAlignmentQuality` float DEFAULT NULL COMMENT 'Quality of fit metric for the alignment of the tilt series corresponding to this tomogram',
+  `gridSquareId` int(11) unsigned DEFAULT NULL COMMENT 'FK, references medium mag map in GridSquare',
   PRIMARY KEY (`tomogramId`),
   KEY `Tomogram_fk_dataCollectionId` (`dataCollectionId`),
   KEY `Tomogram_fk_autoProcProgramId` (`autoProcProgramId`),
+  KEY `Tomogram_fk_gridSquareId` (`gridSquareId`),
   CONSTRAINT `Tomogram_fk_autoProcProgramId` FOREIGN KEY (`autoProcProgramId`) REFERENCES `AutoProcProgram` (`autoProcProgramId`) ON DELETE SET NULL ON UPDATE CASCADE,
-  CONSTRAINT `Tomogram_fk_dataCollectionId` FOREIGN KEY (`dataCollectionId`) REFERENCES `DataCollection` (`dataCollectionId`) ON DELETE CASCADE ON UPDATE CASCADE
+  CONSTRAINT `Tomogram_fk_dataCollectionId` FOREIGN KEY (`dataCollectionId`) REFERENCES `DataCollection` (`dataCollectionId`) ON DELETE CASCADE ON UPDATE CASCADE,
+  CONSTRAINT `Tomogram_fk_gridSquareId` FOREIGN KEY (`gridSquareId`) REFERENCES `GridSquare` (`gridSquareId`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1 COMMENT='For storing per-sample, per-position data analysis results (reconstruction)';
 /*!40101 SET character_set_client = @saved_cs_client */;
 DROP TABLE IF EXISTS `UserGroup`;