diff --git a/Makefile b/Makefile
index ea5ba1963..ed704d6d8 100644
--- a/Makefile
+++ b/Makefile
@@ -62,8 +62,12 @@ flake8:
 isort-check:
 	isort --ac --check-only $(py_sources)
 
+.PHONY: check-version
+check-version:
+	bash ./extras/check_version.sh
+
 .PHONY: check
-check: flake8 isort-check mypy
+check: flake8 isort-check mypy check-version
 
 # formatting:
 
diff --git a/extras/check_version.sh b/extras/check_version.sh
new file mode 100755
index 000000000..f972fd500
--- /dev/null
+++ b/extras/check_version.sh
@@ -0,0 +1,31 @@
+#!/bin/bash
+
+OPENAPI_FILE="hathor/cli/openapi_files/openapi_base.json"
+SRC_FILE="hathor/version.py"
+PACKAGE_FILE="pyproject.toml"
+
+OPENAPI_VERSION=`grep "version\":" ${OPENAPI_FILE} | cut -d'"' -f4`
+SRC_VERSION=`grep "__version__" ${SRC_FILE} | cut -d "'" -f2`
+PACKAGE_VERSION=`grep '^version' ${PACKAGE_FILE} | cut -d '"' -f2`
+
+# For debugging:
+# echo x${SRC_VERSION}x
+# echo x${OPENAPI_VERSION}x
+# echo x${PACKAGE_VERSION}x
+
+EXITCODE=0
+
+if [[ x${PACKAGE_VERSION}x != x${SRC_VERSION}x ]]; then
+	echo "Version different in ${PACKAGE_FILE} and ${SRC_FILE}"
+	EXITCODE=-1
+fi
+
+if [[ x${PACKAGE_VERSION}x != x${OPENAPI_VERSION}x ]]; then
+	echo "Version different in ${PACKAGE_FILE} and ${OPENAPI_FILE}"
+	EXITCODE=-1
+fi
+
+if [[ ${EXITCODE} == 0 ]]; then
+	echo OK
+fi
+exit $EXITCODE
diff --git a/hathor/cli/openapi_files/openapi_base.json b/hathor/cli/openapi_files/openapi_base.json
index 02f00e179..52db6957f 100644
--- a/hathor/cli/openapi_files/openapi_base.json
+++ b/hathor/cli/openapi_files/openapi_base.json
@@ -7,7 +7,7 @@
         ],
 	"info": {
             "title": "Hathor API",
-            "version": "0.39.1"
+            "version": "0.40.0"
 	},
 	"consumes": [
             "application/json"
diff --git a/hathor/version.py b/hathor/version.py
index 44e5c7466..9cfcb4b4d 100644
--- a/hathor/version.py
+++ b/hathor/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.39.1'
+__version__ = '0.40.0'
diff --git a/pyproject.toml b/pyproject.toml
index 482e854b2..97cd33591 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,7 +14,7 @@
 
 [tool.poetry]
 name = "hathor"
-version = "0.39.1"
+version = "0.40.0"
 description = "Hathor Network full-node"
 authors = ["Hathor Team <contact@hathor.network>"]
 license = "Apache-2.0"