diff --git a/DivKit/Actions/DivActionURLHandler.swift b/DivKit/Actions/DivActionURLHandler.swift
index 52232854..5d808941 100644
--- a/DivKit/Actions/DivActionURLHandler.swift
+++ b/DivKit/Actions/DivActionURLHandler.swift
@@ -144,8 +144,8 @@ public final class DivActionURLHandler {
         index: index,
         numberOfPages: pagerState.numberOfPages
       )
-    case is TabViewState:
-      setTabsCurrentItem(id: id, index: index)
+    case let tabsState as TabViewState:
+      setTabsCurrentItem(id: id, index: index, countOfPages: tabsState.countOfPages)
     default:
       return
     }
@@ -172,7 +172,16 @@ public final class DivActionURLHandler {
         numberOfPages: pagerState.numberOfPages
       )
     case let tabsState as TabViewState:
-      setTabsCurrentItem(id: id, index: Int(tabsState.selectedPageIndex) + 1)
+      let nextIndex = getNextIndex(
+        current: Int(tabsState.selectedPageIndex),
+        count: tabsState.countOfPages,
+        overflow: overflow
+      )
+      setTabsCurrentItem(
+        id: id,
+        index: nextIndex,
+        countOfPages: tabsState.countOfPages
+      )
     default:
       return
     }
@@ -212,7 +221,16 @@ public final class DivActionURLHandler {
         numberOfPages: pagerState.numberOfPages
       )
     case let tabsState as TabViewState:
-      setTabsCurrentItem(id: id, index: Int(tabsState.selectedPageIndex) - 1)
+      let prevIndex = getPreviousIndex(
+        current: Int(tabsState.selectedPageIndex),
+        count: tabsState.countOfPages,
+        overflow: overflow
+      )
+      setTabsCurrentItem(
+        id: id,
+        index: prevIndex,
+        countOfPages: tabsState.countOfPages
+      )
     default:
       return
     }
@@ -253,10 +271,13 @@ public final class DivActionURLHandler {
     )
   }
 
-  private func setTabsCurrentItem(id: String, index: Int) {
+  private func setTabsCurrentItem(id: String, index: Int, countOfPages: Int) {
     blockStateStorage.setState(
       id: id,
-      state: TabViewState(selectedPageIndex: CGFloat(max(0, index)))
+      state: TabViewState(
+        selectedPageIndex: CGFloat(max(0, index)),
+        countOfPages: countOfPages
+      )
     )
   }
 }
diff --git a/DivKit/DivKitInfo.swift b/DivKit/DivKitInfo.swift
index 7a52cc33..c943c24c 100644
--- a/DivKit/DivKitInfo.swift
+++ b/DivKit/DivKitInfo.swift
@@ -1,3 +1,3 @@
 public enum DivKitInfo {
-  public static let version = "23.6.0"
+  public static let version = "23.7.0"
 }
diff --git a/DivKit/Extensions/DelayExtensions.swift b/DivKit/Extensions/DelayExtensions.swift
index b3d9624a..137e4e37 100644
--- a/DivKit/Extensions/DelayExtensions.swift
+++ b/DivKit/Extensions/DelayExtensions.swift
@@ -1,8 +1,7 @@
 import LayoutKit
 
 extension Delay {
-  init?(milliseconds: Int) {
-    guard milliseconds >= 0 else { return nil }
+  init(milliseconds: Int) {
     self.init(Double(milliseconds) / 1000)
   }
 }
diff --git a/DivKit/Extensions/DivAnimationExtensions.swift b/DivKit/Extensions/DivAnimationExtensions.swift
index ff5ed5d2..34d19573 100644
--- a/DivKit/Extensions/DivAnimationExtensions.swift
+++ b/DivKit/Extensions/DivAnimationExtensions.swift
@@ -41,8 +41,8 @@ extension DivAnimation {
       kind: kind,
       start: startValue ?? kind.defaultStartValue(for: type),
       end: endValue ?? kind.defaultEndValue(for: type),
-      duration: Duration(milliseconds: resolveDuration(expressionResolver)) ?? .default,
-      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)) ?? 0,
+      duration: Duration(milliseconds: resolveDuration(expressionResolver)),
+      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)),
       timingFunction: resolveInterpolator(expressionResolver).asTimingFunction()
     )
 
@@ -106,7 +106,3 @@ extension TimeOrientation {
     }
   }
 }
-
-extension Duration {
-  fileprivate static let `default` = Duration(milliseconds: 100)!
-}
diff --git a/DivKit/Extensions/DivAppearanceTransitionExtensions.swift b/DivKit/Extensions/DivAppearanceTransitionExtensions.swift
index 8890447e..5158f1f2 100644
--- a/DivKit/Extensions/DivAppearanceTransitionExtensions.swift
+++ b/DivKit/Extensions/DivAppearanceTransitionExtensions.swift
@@ -49,11 +49,9 @@ extension DivAppearanceTransition {
       kind: kind,
       start: type == .appearing ? value1 : value2,
       end: type == .appearing ? value2 : value1,
-      duration: Duration(milliseconds: transition.resolveDuration(expressionResolver))
-        ?? 0.3,
-      delay: Delay(milliseconds: transition.resolveStartDelay(expressionResolver)) ?? 0,
-      timingFunction: transition.resolveInterpolator(expressionResolver)
-        .asTimingFunction()
+      duration: Duration(milliseconds: transition.resolveDuration(expressionResolver)),
+      delay: Delay(milliseconds: transition.resolveStartDelay(expressionResolver)),
+      timingFunction: transition.resolveInterpolator(expressionResolver).asTimingFunction()
     )
 
     return [animation]
diff --git a/DivKit/Extensions/DivBase/DivBaseExtensions.swift b/DivKit/Extensions/DivBase/DivBaseExtensions.swift
index d97bb71f..81e8eb5e 100644
--- a/DivKit/Extensions/DivBase/DivBaseExtensions.swift
+++ b/DivKit/Extensions/DivBase/DivBaseExtensions.swift
@@ -362,7 +362,7 @@ extension DivTooltip {
     return BlockTooltip(
       id: id,
       block: block,
-      duration: Duration(milliseconds: resolveDuration(expressionResolver)) ?? 0,
+      duration: Duration(milliseconds: resolveDuration(expressionResolver)),
       offset: offset?.cast(with: expressionResolver) ?? .zero,
       position: position
     )
diff --git a/DivKit/Extensions/DivChangeTransitionExtensions.swift b/DivKit/Extensions/DivChangeTransitionExtensions.swift
index e146ceaa..a0c43760 100644
--- a/DivKit/Extensions/DivChangeTransitionExtensions.swift
+++ b/DivKit/Extensions/DivChangeTransitionExtensions.swift
@@ -8,10 +8,8 @@ extension DivChangeTransition {
     switch self {
     case let .divChangeBoundsTransition(transition):
       return ChangeBoundsTransition(
-        duration: Duration(
-          milliseconds: transition.resolveDuration(expressionResolver)
-        ) ?? 0.3,
-        delay: Delay(milliseconds: transition.resolveStartDelay(expressionResolver)) ?? 0,
+        duration: Duration(milliseconds: transition.resolveDuration(expressionResolver)),
+        delay: Delay(milliseconds: transition.resolveStartDelay(expressionResolver)),
         timingFunction: transition.resolveInterpolator(expressionResolver)
           .asTimingFunction()
       )
diff --git a/DivKit/Extensions/DivFadeTransitionExtensions.swift b/DivKit/Extensions/DivFadeTransitionExtensions.swift
index 5af29c70..9a06e83f 100644
--- a/DivKit/Extensions/DivFadeTransitionExtensions.swift
+++ b/DivKit/Extensions/DivFadeTransitionExtensions.swift
@@ -10,8 +10,8 @@ extension DivFadeTransition {
       kind: .fade,
       start: resolveAlpha(expressionResolver),
       end: 1,
-      duration: Duration(milliseconds: resolveDuration(expressionResolver)) ?? 0.3,
-      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)) ?? 0,
+      duration: Duration(milliseconds: resolveDuration(expressionResolver)),
+      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)),
       timingFunction: resolveInterpolator(expressionResolver).asTimingFunction()
     )
   }
diff --git a/DivKit/Extensions/DivStateExtensions.swift b/DivKit/Extensions/DivStateExtensions.swift
index 4f0b4bab..0108c9ec 100644
--- a/DivKit/Extensions/DivStateExtensions.swift
+++ b/DivKit/Extensions/DivStateExtensions.swift
@@ -202,8 +202,8 @@ extension DivAnimation {
       kind: kind,
       start: resolveStartValue(expressionResolver) ?? kind.defaultStartValue(for: type),
       end: resolveEndValue(expressionResolver) ?? kind.defaultEndValue(for: type),
-      duration: Duration(milliseconds: resolveDuration(expressionResolver)) ?? 0.3,
-      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)) ?? 0,
+      duration: Duration(milliseconds: resolveDuration(expressionResolver)),
+      delay: Delay(milliseconds: resolveStartDelay(expressionResolver)),
       timingFunction: resolveInterpolator(expressionResolver).asTimingFunction()
     )
 
diff --git a/DivKit/Extensions/DivTabsExtensions.swift b/DivKit/Extensions/DivTabsExtensions.swift
index 25f2bff1..2f30e8b9 100644
--- a/DivKit/Extensions/DivTabsExtensions.swift
+++ b/DivKit/Extensions/DivTabsExtensions.swift
@@ -88,7 +88,8 @@ extension DivTabs: DivBlockModeling {
       index = CGFloat(resolveSelectedTab(context.expressionResolver))
     }
     let newState = TabViewState(
-      selectedPageIndex: min(index, CGFloat(tabs.count) - 1)
+      selectedPageIndex: min(index, CGFloat(tabs.count) - 1),
+      countOfPages: tabs.count
     )
     stateStorage.setState(path: path, state: newState)
     return newState
diff --git a/DivKit/Extensions/DurationExtensions.swift b/DivKit/Extensions/DurationExtensions.swift
index a8ae9e5c..36b0fc7e 100644
--- a/DivKit/Extensions/DurationExtensions.swift
+++ b/DivKit/Extensions/DurationExtensions.swift
@@ -1,8 +1,7 @@
 import LayoutKit
 
 extension Duration {
-  init?(milliseconds: Int) {
-    guard milliseconds > 0 else { return nil }
+  init(milliseconds: Int) {
     self.init(Double(milliseconds) / 1000)
   }
 }
diff --git a/LayoutKit/LayoutKit/Blocks/Duration.swift b/LayoutKit/LayoutKit/Blocks/Duration.swift
index b8ff3aed..a6eb2dea 100644
--- a/LayoutKit/LayoutKit/Blocks/Duration.swift
+++ b/LayoutKit/LayoutKit/Blocks/Duration.swift
@@ -2,7 +2,7 @@ public struct Duration: ExpressibleByFloatLiteral, ExpressibleByIntegerLiteral,
   public let value: Double
 
   public init(_ value: Double) {
-    precondition(value > 0, "Duration must be positive number")
+    precondition(value >= 0, "Duration must be non-negative number")
     self.value = value
   }
 
diff --git a/LayoutKit/LayoutKit/UI/Views/TabbedPages/TabContentsView.swift b/LayoutKit/LayoutKit/UI/Views/TabbedPages/TabContentsView.swift
index 4c52a353..92c41c39 100644
--- a/LayoutKit/LayoutKit/UI/Views/TabbedPages/TabContentsView.swift
+++ b/LayoutKit/LayoutKit/UI/Views/TabbedPages/TabContentsView.swift
@@ -207,13 +207,15 @@ internal class TabContentsView: BlockView {
 
   private func updateSelectedPageIndexFromRelativeContentOffset(isIntermediate: Bool) {
     notifyDelegateAboutSelectedPageIndexChange(
-      relativeContentOffset,
+      selectedPageIndex: relativeContentOffset,
+      countOfPages: model.pages.count,
       isIntermediate: isIntermediate
     )
   }
 
   private func notifyDelegateAboutSelectedPageIndexChange(
-    _ selectedPageIndex: CGFloat,
+    selectedPageIndex: CGFloat,
+    countOfPages: Int,
     isIntermediate: Bool
   ) {
     let roundedIndex = selectedPageIndex.rounded(.toNearestOrAwayFromZero)
@@ -224,7 +226,7 @@ internal class TabContentsView: BlockView {
     let index = isIntermediate ? selectedPageIndex : roundedIndex
     self.selectedPageIndex = index
     updatesDelegate?.onSelectedPageIndexChanged(index, inModel: model)
-    let state = TabViewState(selectedPageIndex: index)
+    let state = TabViewState(selectedPageIndex: index, countOfPages: countOfPages)
     observer?.elementStateChanged(state, forPath: model.path)
   }
 }
diff --git a/LayoutKit/LayoutKit/ViewModels/TabbedPages/TabViewState.swift b/LayoutKit/LayoutKit/ViewModels/TabbedPages/TabViewState.swift
index 655e180a..fe8e6c8e 100644
--- a/LayoutKit/LayoutKit/ViewModels/TabbedPages/TabViewState.swift
+++ b/LayoutKit/LayoutKit/ViewModels/TabbedPages/TabViewState.swift
@@ -5,10 +5,12 @@ import CommonCore
 
 public struct TabViewState: ElementState, Equatable {
   public let selectedPageIndex: CGFloat
+  public let countOfPages: Int
 
-  public static let `default` = TabViewState(selectedPageIndex: 0)
+  public static let `default` = TabViewState(selectedPageIndex: 0, countOfPages: 0)
 
-  public init(selectedPageIndex: CGFloat) {
+  public init(selectedPageIndex: CGFloat, countOfPages: Int) {
     self.selectedPageIndex = selectedPageIndex
+    self.countOfPages = countOfPages
   }
 }