diff --git a/.github/workflows/L1-tests.yml b/.github/workflows/L1-tests.yml
index d5748acf..0aaf227c 100755
--- a/.github/workflows/L1-tests.yml
+++ b/.github/workflows/L1-tests.yml
@@ -435,7 +435,7 @@ jobs:
           -DPLUGIN_AVINPUT=ON
           -DPLUGIN_HDMIINPUT=ON
           -DPLUGIN_HDCPPROFILE=ON
-          -DPLUGIN_HDMICECSOURCE=OFF
+          -DPLUGIN_HDMICECSOURCE=ON
           -DPLUGIN_HDMICECSINK=OFF
           -DUSE_THUNDER_R4=ON
           -DHIDE_NON_EXTERNAL_SYMBOLS=OFF
@@ -513,7 +513,7 @@ jobs:
           -DPLUGIN_AVINPUT=ON
           -DPLUGIN_HDMIINPUT=ON
           -DPLUGIN_HDCPPROFILE=ON
-          -DPLUGIN_HDMICECSOURCE=OFF
+          -DPLUGIN_HDMICECSOURCE=ON
           -DPLUGIN_HDMICECSINK=OFF
           -DRDK_SERVICES_L1_TEST=ON
           -DUSE_THUNDER_R4=ON
diff --git a/AVOutput/AVOutputTVHelper.cpp b/AVOutput/AVOutputTVHelper.cpp
index 7e3b28c5..cc401a7a 100644
--- a/AVOutput/AVOutputTVHelper.cpp
+++ b/AVOutput/AVOutputTVHelper.cpp
@@ -321,13 +321,13 @@ namespace Plugin {
     {
         tvDimmingMode_t index = tvDimmingMode_MAX;
 
-        if(mode.compare("local") == 0 ) {
+        if(mode.compare("Local") == 0 ) {
             index=tvDimmingMode_Local;
 	}
-        else if(mode.compare("fixed") == 0 ) {
+        else if(mode.compare("Fixed") == 0 ) {
             index=tvDimmingMode_Fixed;
 	}
-        else if(mode.compare("global") == 0 ) {
+        else if(mode.compare("Global") == 0 ) {
             index=tvDimmingMode_Global;
 	}
         else {
@@ -1514,13 +1514,13 @@ namespace Plugin {
                 return 0;
             }
            else if( forParam.compare("DimmingMode") == 0 ) {
-               if (strncmp(param.value, "fixed", strlen(param.value))==0) {
+               if (strncmp(param.value, "Fixed", strlen(param.value))==0) {
                    value=tvDimmingMode_Fixed;
 	           }
-               else if (strncmp(param.value, "local", strlen(param.value))==0) {
+               else if (strncmp(param.value, "Local", strlen(param.value))==0) {
                    value=tvDimmingMode_Local;
 	           }
-               else if (strncmp(param.value, "global", strlen(param.value))==0) {
+               else if (strncmp(param.value, "Global", strlen(param.value))==0) {
                    value=tvDimmingMode_Global;
 	           }
                return 0;
@@ -1683,9 +1683,9 @@ namespace Plugin {
     void AVOutputTV::getDimmingModeStringFromEnum(int value, std::string &toStore)
     {
         const char *color_temp_string[] = {
-                    [tvDimmingMode_Fixed] = "fixed",
-                    [tvDimmingMode_Local] = "local",
-                    [tvDimmingMode_Global] = "global",
+                    [tvDimmingMode_Fixed] = "Fixed",
+                    [tvDimmingMode_Local] = "Local",
+                    [tvDimmingMode_Global] = "Global",
                 };
         toStore.clear();
         toStore+=color_temp_string[value];
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7ad3be23..83faa0b3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,10 +4,19 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+#### [1.3.1](https://github.com/rdkcentral/entservices-inputoutput/compare/1.3.0...1.3.1)
+
+- RDKEMW-5512: Implement a fix for the SaveTVDimmingMode failure [`#157`](https://github.com/rdkcentral/entservices-inputoutput/pull/157)
+- RDKEMW-1015 - Update gtest [`#155`](https://github.com/rdkcentral/entservices-inputoutput/pull/155)
+- Merge tag '1.3.0' into develop [`2499e0b`](https://github.com/rdkcentral/entservices-inputoutput/commit/2499e0b71c2fbb9e9a303a342fbc4965da5b52c9)
+
 #### [1.3.0](https://github.com/rdkcentral/entservices-inputoutput/compare/1.2.0...1.3.0)
 
+> 20 June 2025
+
 - Feature/rdkemw 1015 comrpc [`#129`](https://github.com/rdkcentral/entservices-inputoutput/pull/129)
 - RDK-57440: Causing config issue for higher versions of cmake [`#146`](https://github.com/rdkcentral/entservices-inputoutput/pull/146)
+- RDK-57440 - Changelog updates for 1.3.0 [`cc4f369`](https://github.com/rdkcentral/entservices-inputoutput/commit/cc4f36979ba5a25a4ae96005b7e2c6dce1523044)
 - Merge tag '1.2.0' into develop [`7b1dccc`](https://github.com/rdkcentral/entservices-inputoutput/commit/7b1dccc6d7bbba3fdf649c900ad15996e6424a27)
 
 #### [1.2.0](https://github.com/rdkcentral/entservices-inputoutput/compare/1.1.1...1.2.0)
diff --git a/Tests/L1Tests/CMakeLists.txt b/Tests/L1Tests/CMakeLists.txt
index 406598ac..2550627b 100755
--- a/Tests/L1Tests/CMakeLists.txt
+++ b/Tests/L1Tests/CMakeLists.txt
@@ -114,11 +114,10 @@ add_plugin_test_ex(PLUGIN_HDMIINPUT tests/test_HdmiInput.cpp "${HDMIINPUT_INC}"
 add_plugin_test_ex(PLUGIN_HDMICEC2 tests/test_HdmiCec2.cpp "../../HdmiCec_2" "${NAMESPACE}HdmiCec_2")
 
 # PLUGIN_HDMICECSINK
-set (HDMICECSINK_INC ${CMAKE_SINK_DIR}/../entservices-inputoutput/HdmiCecSink ${CMAKE_SINK_DIR}/../entservices-inputoutput/helpers)
+set (HDMICECSINK_INC ${CMAKE_SOURCE_DIR}/../entservices-inputoutput/HdmiCecSink ${CMAKE_SOURCE_DIR}/../entservices-inputoutput/helpers)
 set (HDMICECSINK_LIBS ${NAMESPACE}HdmiCecSink ${NAMESPACE}HdmiCecSinkImplementation)
 add_plugin_test_ex(PLUGIN_HDMICECSINK tests/test_HdmiCecSink.cpp "${HDMICECSINK_INC}" "${HDMICECSINK_LIBS}")
 
-
 # PLUGIN_HDMICECSOURCE
 set (HDMICECSOURCE_INC ${CMAKE_SOURCE_DIR}/../entservices-inputoutput/HdmiCecSource ${CMAKE_SOURCE_DIR}/../entservices-inputoutput/helpers)
 set (HDMICECSOURCE_LIBS ${NAMESPACE}HdmiCecSource ${NAMESPACE}HdmiCecSourceImplementation)
diff --git a/Tests/L1Tests/tests/test_HdmiCecSink.cpp b/Tests/L1Tests/tests/test_HdmiCecSink.cpp
index 2f570df1..38631077 100755
--- a/Tests/L1Tests/tests/test_HdmiCecSink.cpp
+++ b/Tests/L1Tests/tests/test_HdmiCecSink.cpp
@@ -22,6 +22,9 @@
 #include <fstream>
 #include <string>
 
+
+#include "HdmiCecSinkImplementation.h"
+#include "HdmiCecSinkMock.h"
 #include "HdmiCecSink.h"
 #include "FactoriesImplementation.h"
 #include "IarmBusMock.h"