diff --git a/SPECS/ncurses/ncurses.signatures.json b/SPECS/ncurses/ncurses.signatures.json
index d6897c6622..5055a48300 100644
--- a/SPECS/ncurses/ncurses.signatures.json
+++ b/SPECS/ncurses/ncurses.signatures.json
@@ -1,5 +1,5 @@
 {
  "Signatures": {
-  "ncurses-6.3-20220612.tgz": "e7de8893348bd0172aea87853b0a042cd1b19e8c5bd68bfabf95e3edcef44122"
+  "ncurses-6.4-20230408.tgz": "46030c04cfb60433db05631e8124640acff284b1d3b9c897ff661686d885e0e8"
  }
 }
\ No newline at end of file
diff --git a/SPECS/ncurses/ncurses.spec b/SPECS/ncurses/ncurses.spec
index 0abab5bd42..36212e6cd8 100644
--- a/SPECS/ncurses/ncurses.spec
+++ b/SPECS/ncurses/ncurses.spec
@@ -1,9 +1,9 @@
-%global patchlevel     20220612
+%global patchlevel     20230408
 
 Summary:        Libraries for terminal handling of character screens
 Name:           ncurses
-Version:        6.3
-Release:        2%{?dist}
+Version:        6.4
+Release:        1%{?dist}
 License:        MIT
 Vendor:         Microsoft Corporation
 Distribution:   Mariner
@@ -233,6 +233,9 @@ xz NEWS
 %files term -f terms.term
 
 %changelog
+* Wed Apr 26 2023 Sindhu Karri <lakarri@microsoft.com> - 6.4-1
+- Update to version 6.4-20230408 to fix CVE-2023-29491
+
 * Tue Sep 20 2022 Jon Slobodzian <joslobo@microsoft.com> - 6.3-2
 - Update to version 6.3-20220612 to fix CVE-2022-29458
 - Cherry-picked from Mariner 1.0
diff --git a/cgmanifest.json b/cgmanifest.json
index 2a41bdc2f0..fd8e0b95fc 100644
--- a/cgmanifest.json
+++ b/cgmanifest.json
@@ -13823,8 +13823,8 @@
         "type": "other",
         "other": {
           "name": "ncurses",
-          "version": "6.3",
-          "downloadUrl": "https://invisible-mirror.net/archives/ncurses/current/ncurses-6.3-20220612.tgz"
+          "version": "6.4",
+          "downloadUrl": "https://invisible-mirror.net/archives/ncurses/current/ncurses-6.4-20230408.tgz"
         }
       }
     },
diff --git a/toolkit/resources/manifests/package/pkggen_core_aarch64.txt b/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
index ea609748af..2509453fd8 100644
--- a/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
+++ b/toolkit/resources/manifests/package/pkggen_core_aarch64.txt
@@ -33,11 +33,11 @@ libpkgconf-1.8.0-3.cm2.aarch64.rpm
 pkgconf-1.8.0-3.cm2.aarch64.rpm
 pkgconf-m4-1.8.0-3.cm2.noarch.rpm
 pkgconf-pkg-config-1.8.0-3.cm2.aarch64.rpm
-ncurses-6.3-2.cm2.aarch64.rpm
-ncurses-compat-6.3-2.cm2.aarch64.rpm
-ncurses-devel-6.3-2.cm2.aarch64.rpm
-ncurses-libs-6.3-2.cm2.aarch64.rpm
-ncurses-term-6.3-2.cm2.aarch64.rpm
+ncurses-6.4-1.cm2.aarch64.rpm
+ncurses-compat-6.4-1.cm2.aarch64.rpm
+ncurses-devel-6.4-1.cm2.aarch64.rpm
+ncurses-libs-6.4-1.cm2.aarch64.rpm
+ncurses-term-6.4-1.cm2.aarch64.rpm
 readline-8.1-1.cm2.aarch64.rpm
 readline-devel-8.1-1.cm2.aarch64.rpm
 coreutils-8.32-6.cm2.aarch64.rpm
diff --git a/toolkit/resources/manifests/package/pkggen_core_x86_64.txt b/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
index 29eef752e4..f749db6ed1 100644
--- a/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
+++ b/toolkit/resources/manifests/package/pkggen_core_x86_64.txt
@@ -33,11 +33,11 @@ libpkgconf-1.8.0-3.cm2.x86_64.rpm
 pkgconf-1.8.0-3.cm2.x86_64.rpm
 pkgconf-m4-1.8.0-3.cm2.noarch.rpm
 pkgconf-pkg-config-1.8.0-3.cm2.x86_64.rpm
-ncurses-6.3-2.cm2.x86_64.rpm
-ncurses-compat-6.3-2.cm2.x86_64.rpm
-ncurses-devel-6.3-2.cm2.x86_64.rpm
-ncurses-libs-6.3-2.cm2.x86_64.rpm
-ncurses-term-6.3-2.cm2.x86_64.rpm
+ncurses-6.4-1.cm2.x86_64.rpm
+ncurses-compat-6.4-1.cm2.x86_64.rpm
+ncurses-devel-6.4-1.cm2.x86_64.rpm
+ncurses-libs-6.4-1.cm2.x86_64.rpm
+ncurses-term-6.4-1.cm2.x86_64.rpm
 readline-8.1-1.cm2.x86_64.rpm
 readline-devel-8.1-1.cm2.x86_64.rpm
 coreutils-8.32-6.cm2.x86_64.rpm
diff --git a/toolkit/resources/manifests/package/toolchain_aarch64.txt b/toolkit/resources/manifests/package/toolchain_aarch64.txt
index 8cde45beec..48f4aee36e 100644
--- a/toolkit/resources/manifests/package/toolchain_aarch64.txt
+++ b/toolkit/resources/manifests/package/toolchain_aarch64.txt
@@ -248,12 +248,12 @@ mpfr-4.1.0-1.cm2.aarch64.rpm
 mpfr-debuginfo-4.1.0-1.cm2.aarch64.rpm
 mpfr-devel-4.1.0-1.cm2.aarch64.rpm
 msopenjdk-11-11.0.18-1.aarch64.rpm
-ncurses-6.3-2.cm2.aarch64.rpm
-ncurses-compat-6.3-2.cm2.aarch64.rpm
-ncurses-debuginfo-6.3-2.cm2.aarch64.rpm
-ncurses-devel-6.3-2.cm2.aarch64.rpm
-ncurses-libs-6.3-2.cm2.aarch64.rpm
-ncurses-term-6.3-2.cm2.aarch64.rpm
+ncurses-6.4-1.cm2.aarch64.rpm
+ncurses-compat-6.4-1.cm2.aarch64.rpm
+ncurses-debuginfo-6.4-1.cm2.aarch64.rpm
+ncurses-devel-6.4-1.cm2.aarch64.rpm
+ncurses-libs-6.4-1.cm2.aarch64.rpm
+ncurses-term-6.4-1.cm2.aarch64.rpm
 newt-0.52.21-4.cm2.aarch64.rpm
 newt-debuginfo-0.52.21-4.cm2.aarch64.rpm
 newt-devel-0.52.21-4.cm2.aarch64.rpm
diff --git a/toolkit/resources/manifests/package/toolchain_x86_64.txt b/toolkit/resources/manifests/package/toolchain_x86_64.txt
index e88fc7c36d..04f1d54e4a 100644
--- a/toolkit/resources/manifests/package/toolchain_x86_64.txt
+++ b/toolkit/resources/manifests/package/toolchain_x86_64.txt
@@ -248,12 +248,12 @@ mpfr-4.1.0-1.cm2.x86_64.rpm
 mpfr-debuginfo-4.1.0-1.cm2.x86_64.rpm
 mpfr-devel-4.1.0-1.cm2.x86_64.rpm
 msopenjdk-11-11.0.18-1.x86_64.rpm
-ncurses-6.3-2.cm2.x86_64.rpm
-ncurses-compat-6.3-2.cm2.x86_64.rpm
-ncurses-debuginfo-6.3-2.cm2.x86_64.rpm
-ncurses-devel-6.3-2.cm2.x86_64.rpm
-ncurses-libs-6.3-2.cm2.x86_64.rpm
-ncurses-term-6.3-2.cm2.x86_64.rpm
+ncurses-6.4-1.cm2.x86_64.rpm
+ncurses-compat-6.4-1.cm2.x86_64.rpm
+ncurses-debuginfo-6.4-1.cm2.x86_64.rpm
+ncurses-devel-6.4-1.cm2.x86_64.rpm
+ncurses-libs-6.4-1.cm2.x86_64.rpm
+ncurses-term-6.4-1.cm2.x86_64.rpm
 newt-0.52.21-4.cm2.x86_64.rpm
 newt-debuginfo-0.52.21-4.cm2.x86_64.rpm
 newt-devel-0.52.21-4.cm2.x86_64.rpm