update dependencies

README.md

@@ -70,8 +70,8 @@ python -m pip install --upgrade -r requirements.txt
 Once the user confirms the above OS constraint, OpenFermion can be installed with the following command. These packages are used for quantum chemistry calculations and could be potentially used in the VQE tutorial.
 
 ```bash
-pip install openfermion
-pip install openfermionpyscf
+pip install openfermion==0.11.0
+pip install openfermionpyscf==0.4
 ```
 
 ### Run programs

README_CN.md

@@ -70,8 +70,8 @@ python -m pip install --upgrade -r requirements.txt
 VQE中调用 openfermion 读取分子 xyz 文件并计算，因此需要安装 openfermion 和 openfermionpyscf。
 
 ```bash
-pip install openfermion
-pip install openfermionpyscf
+pip install openfermion==0.11.0
+pip install openfermionpyscf==0.4
 ```
 
 ### 运行

tutorial/VQE/VQE_CN.ipynb

@@ -182,7 +182,7 @@
    },
    "outputs": [],
    "source": [
-    "!pip install openfermion\n",
+    "!pip install openfermion==0.11.0\n",
     "clear_output()"
    ]
   },
@@ -197,7 +197,7 @@
    },
    "outputs": [],
    "source": [
-    "!pip install openfermionpyscf\n",
+    "!pip install openfermionpyscf==0.4\n",
     "clear_output()"
    ]
   },
@@ -1938,7 +1938,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.10"
+   "version": "3.8.3"
   },
   "toc": {
    "base_numbering": 1,

tutorial/VQE/VQE_EN.ipynb

@@ -173,7 +173,7 @@
    },
    "outputs": [],
    "source": [
-    "!pip install openfermion\n",
+    "!pip install openfermion==0.11.0\n",
     "clear_output()"
    ]
   },
@@ -188,7 +188,7 @@
    },
    "outputs": [],
    "source": [
-    "!pip install openfermionpyscf\n",
+    "!pip install openfermionpyscf==0.4\n",
     "clear_output()"
    ]
   },
@@ -1868,7 +1868,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.10"
+   "version": "3.8.3"
   },
   "toc": {
    "base_numbering": 1,