diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 9a307b6..674bdb4 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -7,7 +7,7 @@ jobs:
     name: build_ubuntu_22.04
     runs-on: ubuntu-22.04
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: install
       run: sudo apt -y install tclsh pkg-config libssl-dev libgtest-dev
     - name: cmake
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 492decb..bba1bfd 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -16,7 +16,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
       with:
         # We must fetch at least the immediate parents so that if this is
         # a pull request then we can checkout the head.
diff --git a/.github/workflows/unit_test.yml b/.github/workflows/unit_test.yml
index eaa86d2..226809c 100644
--- a/.github/workflows/unit_test.yml
+++ b/.github/workflows/unit_test.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: CMake set-up for release
         run: |
           sudo apt update && sudo apt install -y libgtest-dev
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-22.04
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: CMake set-up for debug
         run: |
           sudo apt update && sudo apt install -y libgtest-dev
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c902d8..7d95f2b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -17,7 +17,7 @@ include(ExternalProject)
 ExternalProject_Add(project_srt
         GIT_REPOSITORY https://github.com/Haivision/srt.git
         #  We use the git commit hash because it is faster
-        GIT_TAG 09f35c0f1743e23f514cb41444504a7faeacf89e # v1.5.3
+        GIT_TAG a8c6b65520f814c5bd8f801be48c33ceece7c4a6 # v1.5.4
         SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/srt
         BINARY_DIR ${CMAKE_CURRENT_SOURCE_DIR}/srt
         CONFIGURE_COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/srt/configure --CMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}