diff --git a/deps/requirements.txt b/deps/requirements.txt
index df69641..c0d20f6 100644
--- a/deps/requirements.txt
+++ b/deps/requirements.txt
@@ -12,7 +12,7 @@ Markdown==3.1.1
 numpy==1.17.0
 opencv-python==4.1.0.25
 Pillow==6.1.0
-protobuf==3.9.1
+protobuf==3.18.3
 PyQt5==5.13.0
 PyQt5-sip==4.19.18
 six==1.12.0
diff --git a/deps/requirements_cpu.txt b/deps/requirements_cpu.txt
index d9db8f5..20e92fd 100644
--- a/deps/requirements_cpu.txt
+++ b/deps/requirements_cpu.txt
@@ -12,7 +12,7 @@ Markdown==3.1.1
 numpy==1.17.0
 opencv-python==4.1.0.25
 Pillow==6.1.0
-protobuf==3.9.1
+protobuf==3.18.3
 PyQt5==5.13.0
 PyQt5-sip==4.19.18
 six==1.12.0