diff --git a/components/gitpod-db/src/typeorm/entity/db-workspace-instance-usage.ts b/components/gitpod-db/src/typeorm/entity/db-workspace-instance-usage.ts
index 70d65b19ae3006..83d35b945a7c99 100644
--- a/components/gitpod-db/src/typeorm/entity/db-workspace-instance-usage.ts
+++ b/components/gitpod-db/src/typeorm/entity/db-workspace-instance-usage.ts
@@ -34,7 +34,7 @@ export class DBWorkspaceInstanceUsage {
     @Index("ind_stoppedAt")
     stoppedAt: string;
 
-    @Column("double")
+    @Column("bigint")
     creditsUsed: number;
 
     @Column()
diff --git a/components/gitpod-db/src/typeorm/migration/1658123555591-ChangeUsageCreditsColumnType.ts b/components/gitpod-db/src/typeorm/migration/1658123555591-ChangeUsageCreditsColumnType.ts
new file mode 100644
index 00000000000000..2e0509a04e4116
--- /dev/null
+++ b/components/gitpod-db/src/typeorm/migration/1658123555591-ChangeUsageCreditsColumnType.ts
@@ -0,0 +1,27 @@
+/**
+ * Copyright (c) 2022 Gitpod GmbH. All rights reserved.
+ * Licensed under the GNU Affero General Public License (AGPL).
+ * See License-AGPL.txt in the project root for license information.
+ */
+
+import { MigrationInterface, QueryRunner } from "typeorm";
+
+export class New1658123371893 implements MigrationInterface {
+    public async up(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`DROP INDEX \`ind_stoppedAt\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP INDEX \`ind_startedAt\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP INDEX \`ind_attributionId\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP TABLE \`d_b_workspace_instance_usage\``);
+
+        await queryRunner.query(
+            `CREATE TABLE \`d_b_workspace_instance_usage\` (\`instanceId\` char(36) NOT NULL, \`attributionId\` varchar(255) NOT NULL, \`startedAt\` timestamp(6) NOT NULL, \`stoppedAt\` timestamp(6) NULL, \`creditsUsed\` bigint NOT NULL, \`generationId\` int NOT NULL, \`deleted\` tinyint NOT NULL, INDEX \`ind_attributionId\` (\`attributionId\`), INDEX \`ind_startedAt\` (\`startedAt\`), INDEX \`ind_stoppedAt\` (\`stoppedAt\`), PRIMARY KEY (\`instanceId\`)) ENGINE=InnoDB`,
+        );
+    }
+
+    public async down(queryRunner: QueryRunner): Promise<void> {
+        await queryRunner.query(`DROP INDEX \`ind_stoppedAt\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP INDEX \`ind_startedAt\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP INDEX \`ind_attributionId\` ON \`d_b_workspace_instance_usage\``);
+        await queryRunner.query(`DROP TABLE \`d_b_workspace_instance_usage\``);
+    }
+}
diff --git a/components/usage/pkg/controller/reconciler.go b/components/usage/pkg/controller/reconciler.go
index a651a4098ff681..765e90b41d6386 100644
--- a/components/usage/pkg/controller/reconciler.go
+++ b/components/usage/pkg/controller/reconciler.go
@@ -248,7 +248,7 @@ func usageReportToUsageRecords(report UsageReport, pricer *WorkspacePricer, now
 				AttributionID: attributionId,
 				StartedAt:     instance.CreationTime.Time(),
 				StoppedAt:     stoppedAt,
-				CreditsUsed:   float64(pricer.CreditsUsedByInstance(&instance, now)),
+				CreditsUsed:   pricer.CreditsUsedByInstance(&instance, now),
 				GenerationId:  0,
 				Deleted:       false,
 			})
diff --git a/components/usage/pkg/db/workspace_instance_usage.go b/components/usage/pkg/db/workspace_instance_usage.go
index 36a51a6b2ed647..519c4098bc0135 100644
--- a/components/usage/pkg/db/workspace_instance_usage.go
+++ b/components/usage/pkg/db/workspace_instance_usage.go
@@ -19,7 +19,7 @@ type WorkspaceInstanceUsage struct {
 	AttributionID AttributionID `gorm:"column:attributionId;type:varchar;size:255;" json:"attributionId"`
 	StartedAt     time.Time     `gorm:"column:startedAt;type:timestamp;default:CURRENT_TIMESTAMP(6);" json:"startedAt"`
 	StoppedAt     sql.NullTime  `gorm:"column:stoppedAt;type:timestamp;" json:"stoppedAt"`
-	CreditsUsed   float64       `gorm:"column:creditsUsed;type:double;" json:"creditsUsed"`
+	CreditsUsed   int64         `gorm:"column:creditsUsed;type:bigint;" json:"creditsUsed"`
 	GenerationId  int           `gorm:"column:generationId;type:int;" json:"generationId"`
 	Deleted       bool          `gorm:"column:deleted;type:tinyint;default:0;" json:"deleted"`
 }