diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6becf1e..4b0c86d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -8,7 +8,7 @@
     FetchContent_Declare(
         parallel-hashmap
         GIT_REPOSITORY https://github.com/greg7mdp/parallel-hashmap.git
-        GIT_TAG        v1.3.7 # adjust tag/branch/commit as needed
+        GIT_TAG        1.3.8 # adjust tag/branch/commit as needed
     )
     FetchContent_MakeAvailable(parallel-hashmap)
 
diff --git a/doc/new_release.md b/doc/new_release.md
new file mode 100644
index 0000000..56cfbf0
--- /dev/null
+++ b/doc/new_release.md
@@ -0,0 +1,35 @@
+- update version in phmap_config.h
+- update version in comment on top of CMakeLists.txt
+- create the new release on github (tag `1.3.8` - use semantic versioning)
+- download the tar.gz from github, and use `sha256sum parallel-hashmap-1.3.8.tar.gz` on linux to get the sha256
+
+## conan
+
+- fork and clone [conan-center repo](https://github.com/conan-io/conan-center-index)
+     (or sync +  git pull)
+- git checkout -b phmap_1.3.8
+- update: `recipes/parallel-hashmap/all/conandata.yml` and `recipes/parallel-hashmap/config.yml`
+- sudo pip install conan -U 
+- cd recipes/parallel-hashmap/all
+- conan create conanfile.py parallel-hashmap/1.3.8@ -pr:b=default -pr:h=default 
+- create PR like [this](https://github.com/conan-io/conan-center-index/pull/13161)
+
+
+## vcpkg
+
+- fork and clone [vcpkg repo](https://github.com/microsoft/vcpkg)
+     (or sync +  git pull)
+- git checkout -b phmap_1.3.8
+- update ports/parallel-hashmap/portfile.cmake and ports/parallel-hashmap/vcpkg.json
+
+in windows, non-cygwin console
+
+- set VCPKG_ROOT=
+- vcpkg install parallel-hashmap --triplet x64-windows
+- # update sha in portfile.cmake
+- git diff
+- git commit ...
+- vcpkg x-add-version --all --overwrite-version ## (or ./vcpkg.exe --no-dry-run upgrade )
+- git diff
+- git commit ...
+- git push origin phmap_1.3.8 
diff --git a/parallel_hashmap/phmap_config.h b/parallel_hashmap/phmap_config.h
index fbad5e5..18434f6 100644
--- a/parallel_hashmap/phmap_config.h
+++ b/parallel_hashmap/phmap_config.h
@@ -36,7 +36,7 @@
 
 #define PHMAP_VERSION_MAJOR 1
 #define PHMAP_VERSION_MINOR 3
-#define PHMAP_VERSION_PATCH 6
+#define PHMAP_VERSION_PATCH 8
 
 // Included for the __GLIBC__ macro (or similar macros on other systems).
 #include <limits.h>