diff --git a/src/backend/impl/src/repositories/proposal_repository.rs b/src/backend/impl/src/repositories/proposal_repository.rs
index 414756d..ced744e 100644
--- a/src/backend/impl/src/repositories/proposal_repository.rs
+++ b/src/backend/impl/src/repositories/proposal_repository.rs
@@ -259,7 +259,7 @@ mod tests {
     use super::*;
     use crate::{
         fixtures::{self, date_time_a, date_time_b, date_time_c},
-        repositories::NervousSystem,
+        repositories::{NervousSystem, PROPOSAL_REVIEW_PERIOD_DURATION},
         system_api::get_date_time,
     };
     use chrono::Duration;
@@ -401,8 +401,8 @@ mod tests {
             .get_proposals(Some(ReviewPeriodStateKey::Completed))
             .unwrap();
 
-        assert_eq!(in_progress_result.len(), 4);
-        assert_eq!(completed_result.len(), 2);
+        assert_eq!(in_progress_result.len(), 5);
+        assert_eq!(completed_result.len(), 3);
     }
 
     #[fixture]
@@ -441,20 +441,42 @@ mod tests {
             Proposal {
                 state: ReviewPeriodState::InProgress,
                 ..fixtures::nns_replica_version_management_proposal(
-                    Some(
-                        DateTime::new(current_time - Duration::hours(48) - Duration::minutes(1))
-                            .unwrap(),
-                    ),
+                    Some(DateTime::new(current_time - Duration::hours(48)).unwrap()),
                     Some(130396),
                 )
             },
             Proposal {
                 state: ReviewPeriodState::InProgress,
                 ..fixtures::nns_replica_version_management_proposal(
-                    Some(DateTime::new(current_time - Duration::hours(60)).unwrap()),
+                    Some(DateTime::new(current_time - PROPOSAL_REVIEW_PERIOD_DURATION).unwrap()),
                     Some(130395),
                 )
             },
+            Proposal {
+                state: ReviewPeriodState::InProgress,
+                ..fixtures::nns_replica_version_management_proposal(
+                    Some(
+                        DateTime::new(
+                            current_time - (PROPOSAL_REVIEW_PERIOD_DURATION + Duration::minutes(1)),
+                        )
+                        .unwrap(),
+                    ),
+                    Some(130394),
+                )
+            },
+            Proposal {
+                state: ReviewPeriodState::InProgress,
+                ..fixtures::nns_replica_version_management_proposal(
+                    Some(
+                        DateTime::new(
+                            current_time
+                                - (PROPOSAL_REVIEW_PERIOD_DURATION.checked_mul(2).unwrap()),
+                        )
+                        .unwrap(),
+                    ),
+                    Some(130393),
+                )
+            },
         ]
     }
 
diff --git a/src/backend/impl/src/repositories/types/proposal.rs b/src/backend/impl/src/repositories/types/proposal.rs
index ca74d12..6a370b1 100644
--- a/src/backend/impl/src/repositories/types/proposal.rs
+++ b/src/backend/impl/src/repositories/types/proposal.rs
@@ -9,6 +9,8 @@ use ic_stable_structures::{
 };
 use std::{borrow::Cow, ops::RangeBounds};
 
+pub(crate) const PROPOSAL_REVIEW_PERIOD_DURATION: Duration = Duration::hours(96);
+
 pub type ProposalId = Uuid;
 pub type NervousSystemProposalId = u64;
 pub type NeuronId = u64;
@@ -135,10 +137,10 @@ impl Storable for Proposal {
 
 impl Proposal {
     /// Checks if the proposal is in [ReviewPeriodState::InProgress] state
-    /// and was proposed more than **48 hours** ago.
+    /// and was proposed more than [PROPOSAL_REVIEW_PERIOD_DURATION].
     pub fn is_pending(&self, current_time: &DateTime) -> bool {
         self.state == ReviewPeriodState::InProgress
-            && self.proposed_at().unwrap() <= current_time.sub(Duration::hours(48))
+            && self.proposed_at().unwrap() <= current_time.sub(PROPOSAL_REVIEW_PERIOD_DURATION)
     }
 
     /// Checks if the proposal is in [ReviewPeriodState::Completed] state.
@@ -487,8 +489,10 @@ mod tests {
                 state: ReviewPeriodState::InProgress,
                 ..fixtures::nns_replica_version_management_proposal(
                     Some(
-                        DateTime::new(current_time - Duration::hours(48) - Duration::minutes(1))
-                            .unwrap(),
+                        DateTime::new(
+                            current_time - (PROPOSAL_REVIEW_PERIOD_DURATION + Duration::minutes(1)),
+                        )
+                        .unwrap(),
                     ),
                     None,
                 )
@@ -496,7 +500,12 @@ mod tests {
             Proposal {
                 state: ReviewPeriodState::InProgress,
                 ..fixtures::nns_replica_version_management_proposal(
-                    Some(DateTime::new(current_time - Duration::hours(60)).unwrap()),
+                    Some(
+                        DateTime::new(
+                            current_time - PROPOSAL_REVIEW_PERIOD_DURATION.checked_mul(2).unwrap(),
+                        )
+                        .unwrap(),
+                    ),
                     None,
                 )
             },
diff --git a/src/backend/integration/src/support/common.ts b/src/backend/integration/src/support/common.ts
index 5e48057..016582d 100644
--- a/src/backend/integration/src/support/common.ts
+++ b/src/backend/integration/src/support/common.ts
@@ -62,9 +62,9 @@ export async function createProposal(
 }
 
 /**
- * The review period is **48 hours** in milliseconds.
+ * The review period is **96 hours** in milliseconds.
  */
-export const REVIEW_PERIOD_MS = 48 * 60 * 60 * 1000;
+export const PROPOSAL_REVIEW_PERIOD_MS = 96 * 60 * 60 * 1000;
 
 /**
  * Advances PIC's time in order to make the proposal complete.
@@ -75,7 +75,7 @@ export async function completeProposal(
   proposalId: string,
 ) {
   // advance time to make the proposal expire
-  await pic.advanceTime(REVIEW_PERIOD_MS);
+  await pic.advanceTime(PROPOSAL_REVIEW_PERIOD_MS);
   // ensure timers run
   await pic.tick(2);
 
diff --git a/src/backend/integration/src/tests/proposal.spec.ts b/src/backend/integration/src/tests/proposal.spec.ts
index 326ac7c..45bd090 100644
--- a/src/backend/integration/src/tests/proposal.spec.ts
+++ b/src/backend/integration/src/tests/proposal.spec.ts
@@ -1,7 +1,7 @@
 import { describe, beforeEach, afterEach, it, expect } from 'bun:test';
 import {
   Governance,
-  REVIEW_PERIOD_MS,
+  PROPOSAL_REVIEW_PERIOD_MS,
   TestDriver,
   extractErrResponse,
   extractOkResponse,
@@ -31,7 +31,7 @@ describe('Proposal', () => {
   };
 
   const advanceTimeToCompleteProposals = async () => {
-    await driver.advanceTime(REVIEW_PERIOD_MS + 1);
+    await driver.advanceTime(PROPOSAL_REVIEW_PERIOD_MS + 1);
   };
 
   const createProposalsBatch = async (count: number): Promise<bigint[]> => {
@@ -180,7 +180,7 @@ describe('Proposal', () => {
       expectListProposalsResult(resInProgress);
 
       // advance time, but do not reach the review deadline
-      await driver.advanceTime(REVIEW_PERIOD_MS - advancedTimeMs - 1);
+      await driver.advanceTime(PROPOSAL_REVIEW_PERIOD_MS - advancedTimeMs - 1);
 
       const resCompleted = await driver.actor.list_proposals({
         state: [{ completed: null }],