diff --git a/README.md b/README.md
index fa19737dea..6f874f75ed 100644
--- a/README.md
+++ b/README.md
@@ -202,7 +202,7 @@ Step 1-3 are to be done on the host OS (Linux):
 
 3. Run the Occlum Docker container, which has Occlum and its demos preinstalled:
     ```
-    docker run -it --device /dev/isgx occlum/occlum:0.19.1-ubuntu18.04
+    docker run -it --device /dev/isgx occlum/occlum:0.20.0-ubuntu18.04
     ```
 
 Step 4-5 are to be done on the guest OS running inside the Docker container:
diff --git a/src/exec/Cargo.lock b/src/exec/Cargo.lock
index 162c931087..26b3a68c53 100644
--- a/src/exec/Cargo.lock
+++ b/src/exec/Cargo.lock
@@ -419,7 +419,7 @@ dependencies = [
 
 [[package]]
 name = "occlum_exec"
-version = "0.19.1"
+version = "0.20.0"
 dependencies = [
  "chrono 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/src/exec/Cargo.toml b/src/exec/Cargo.toml
index 67d3b561a7..41e03ee713 100644
--- a/src/exec/Cargo.toml
+++ b/src/exec/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "occlum_exec"
-version = "0.19.1"
+version = "0.20.0"
 edition = "2018"
 
 [lib]
diff --git a/src/libos/Cargo.lock b/src/libos/Cargo.lock
index e32d885bda..e1cecd952b 100644
--- a/src/libos/Cargo.lock
+++ b/src/libos/Cargo.lock
@@ -2,7 +2,7 @@
 # It is not intended for manual editing.
 [[package]]
 name = "Occlum"
-version = "0.19.1"
+version = "0.20.0"
 dependencies = [
  "aligned",
  "atomic",
diff --git a/src/libos/Cargo.toml b/src/libos/Cargo.toml
index c210e10607..88e27bccd5 100644
--- a/src/libos/Cargo.toml
+++ b/src/libos/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "Occlum"
-version = "0.19.1"
+version = "0.20.0"
 edition = "2018"
 
 [lib]
diff --git a/src/pal/include/occlum_version.h b/src/pal/include/occlum_version.h
index eb7cd479f3..97aa6e5989 100644
--- a/src/pal/include/occlum_version.h
+++ b/src/pal/include/occlum_version.h
@@ -1,10 +1,10 @@
 #ifndef _OCCLUM_VERSION_H_
 #define _OCCLUM_VERSION_H_
 
-// Version = 0.19.1
+// Version = 0.20.0
 #define OCCLUM_MAJOR_VERSION    0
-#define OCCLUM_MINOR_VERSION    19
-#define OCCLUM_PATCH_VERSION    1
+#define OCCLUM_MINOR_VERSION    20
+#define OCCLUM_PATCH_VERSION    0
 
 #define STRINGIZE_PRE(X) #X
 #define STRINGIZE(X) STRINGIZE_PRE(X)