diff --git a/sonic-slave-buster/Dockerfile.j2 b/sonic-slave-buster/Dockerfile.j2
index ba380918738..1813425ee9d 100644
--- a/sonic-slave-buster/Dockerfile.j2
+++ b/sonic-slave-buster/Dockerfile.j2
@@ -243,6 +243,8 @@ RUN apt-get update && apt-get install -y \
 # For gtest
         libgtest-dev \
         cmake \
+# For gmock
+        libgmock-dev \
 # For pam_tacplus build
         autoconf-archive \
 # For iproute2
diff --git a/sonic-slave-jessie/Dockerfile.j2 b/sonic-slave-jessie/Dockerfile.j2
index 3c3e773ed2f..3f410a073cf 100644
--- a/sonic-slave-jessie/Dockerfile.j2
+++ b/sonic-slave-jessie/Dockerfile.j2
@@ -214,6 +214,8 @@ RUN apt-get update && apt-get install -y \
 # For gtest
         libgtest-dev \
         cmake \
+# For gmock
+        libgmock-dev \
 # For pam_tacplus build
         autoconf-archive \
 # For python-based swsscommon
diff --git a/sonic-slave-stretch/Dockerfile.j2 b/sonic-slave-stretch/Dockerfile.j2
index 1cef023b7a0..51e4965b833 100644
--- a/sonic-slave-stretch/Dockerfile.j2
+++ b/sonic-slave-stretch/Dockerfile.j2
@@ -290,6 +290,7 @@ RUN apt-get update && apt-get install -y \
         python-lxml \
         libexpat1-dev
 
+
 ## Config dpkg
 ## install the configuration file if it’s currently missing
 RUN sudo augtool --autosave "set /files/etc/dpkg/dpkg.cfg/force-confmiss"
@@ -383,7 +384,9 @@ RUN apt-get install -y vim
 # Install rsyslog
 RUN apt-get install -y rsyslog
 
-RUN apt-get install -y libgtest-dev
+# For gtest and gmock
+RUN apt-get install -y libgtest-dev libgmock-dev -t stretch-backports
+
 RUN apt-get install -y libarchive13 librhash0
 RUN apt-get -t stretch-backports install -y libuv1
 # Install cmake/cmake-data 3.13.2-1_bpo9+1