diff --git a/.version-determinate b/.version-determinate
index 5b3413147..424e1794d 100644
--- a/.version-determinate
+++ b/.version-determinate
@@ -1 +1 @@
-3.6.7
+3.6.8
diff --git a/doc/manual/source/SUMMARY.md.in b/doc/manual/source/SUMMARY.md.in
index b4458fc8c..ebcb7b956 100644
--- a/doc/manual/source/SUMMARY.md.in
+++ b/doc/manual/source/SUMMARY.md.in
@@ -129,6 +129,7 @@
   - [Contributing](development/contributing.md)
 - [Determinate Nix Release Notes](release-notes-determinate/index.md)
   - [Changes between Nix and Determinate Nix](release-notes-determinate/changes.md)<!-- next -->
+  - [Release 3.6.8 (2025-06-25)](release-notes-determinate/rl-3.6.8.md)
   - [Release 3.6.7 (2025-06-24)](release-notes-determinate/rl-3.6.7.md)
   - [Release 3.6.6 (2025-06-17)](release-notes-determinate/rl-3.6.6.md)
   - [Release 3.6.5 (2025-06-16)](release-notes-determinate/rl-3.6.5.md)
diff --git a/doc/manual/source/release-notes-determinate/changes.md b/doc/manual/source/release-notes-determinate/changes.md
index 95374dcb6..3a38378e0 100644
--- a/doc/manual/source/release-notes-determinate/changes.md
+++ b/doc/manual/source/release-notes-determinate/changes.md
@@ -1,6 +1,6 @@
 # Changes between Nix and Determinate Nix
 
-This section lists the differences between upstream Nix 2.29 and Determinate Nix 3.6.7.<!-- differences -->
+This section lists the differences between upstream Nix 2.29 and Determinate Nix 3.6.8.<!-- differences -->
 
 * In Determinate Nix, flakes are stable. You no longer need to enable the `flakes` experimental feature.
 
@@ -76,3 +76,13 @@ This section lists the differences between upstream Nix 2.29 and Determinate Nix
 <!-- Determinate Nix version 3.6.6 -->
 
 <!-- Determinate Nix version 3.6.7 -->
+
+<!-- Determinate Nix version 3.6.8 -->
+
+* Fix fetchToStore() caching with --impure, improve testing by @edolstra in [DeterminateSystems/nix-src#117](https://github.com/DeterminateSystems/nix-src/pull/117)
+
+* Add lazy-locks setting by @edolstra in [DeterminateSystems/nix-src#113](https://github.com/DeterminateSystems/nix-src/pull/113)
+
+* Sync 2.29.1 by @edolstra in [DeterminateSystems/nix-src#124](https://github.com/DeterminateSystems/nix-src/pull/124)
+
+* Release v3.6.7 by @github-actions in [DeterminateSystems/nix-src#126](https://github.com/DeterminateSystems/nix-src/pull/126)
diff --git a/doc/manual/source/release-notes-determinate/rl-3.6.8.md b/doc/manual/source/release-notes-determinate/rl-3.6.8.md
new file mode 100644
index 000000000..c4b4b96c9
--- /dev/null
+++ b/doc/manual/source/release-notes-determinate/rl-3.6.8.md
@@ -0,0 +1,12 @@
+# Release 3.6.8 (2025-06-25)
+
+* Based on [upstream Nix 2.29.1](../release-notes/rl-2.29.md).
+
+## What's Changed
+* Fix fetchToStore() caching with --impure, improve testing by @edolstra in [DeterminateSystems/nix-src#117](https://github.com/DeterminateSystems/nix-src/pull/117)
+* Add lazy-locks setting by @edolstra in [DeterminateSystems/nix-src#113](https://github.com/DeterminateSystems/nix-src/pull/113)
+* Sync 2.29.1 by @edolstra in [DeterminateSystems/nix-src#124](https://github.com/DeterminateSystems/nix-src/pull/124)
+* Release v3.6.7 by @github-actions in [DeterminateSystems/nix-src#126](https://github.com/DeterminateSystems/nix-src/pull/126)
+
+
+**Full Changelog**: [v3.6.6...v3.6.8](https://github.com/DeterminateSystems/nix-src/compare/v3.6.6...v3.6.8)