diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
index 079fbe18de3e993160ed17c0c0f0cf67a9105cd7..859b03d8ef696f4e1385674f9a3612eb14350a79 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
index ca8cdfe9cfd17fc07f38d57f6a5a1b9cb164aaab..b64148fcd055b6b7ad38fbb8312b835fb4b68a60 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
index 4905e52b2709bc0bebd9d7c49bd76cb2ee7ac4ac..4fe0637c3cc07147be36cadd110683204ad7e3b4 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
index b9ed67b9749a9ca9dfbed10204d8d95e6406f80e..af57f6e1e50128ffa2cc7f465ad41adbebbc6c36 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
index e691d7ae70bf3b71ca41330fa4070532e73c062a..59f1799c45a9d50dc4aae6fe5d61a91819fd2599 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
index 9a1b4b4cd03bedffc2c44386352ff3e12cf360d2..fb1aae7056e9349554ec899c3bbcd8f05d8f38a4 100755
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.sh
@@ -16,7 +16,7 @@
 set -ex
 
 # change to grpc repo root
-cd $(dirname $0)/../../../..
+cd $(dirname $0)/../../../../..
 
 source tools/internal_ci/helper_scripts/prepare_build_linux_rc