diff --git a/.github/workflows/renovate-bump.yaml b/.github/workflows/renovate-bump.yaml
index 40483e0e4d8..d7feeecf38f 100644
--- a/.github/workflows/renovate-bump.yaml
+++ b/.github/workflows/renovate-bump.yaml
@@ -23,13 +23,6 @@ jobs:
           fetch-depth: 0
           ref: master
           path: master
-      - name: Set up Python
-        uses: actions/setup-python@v2
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install pybump
-          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
       - uses: dorny/paths-filter@v2
         id: filter
         with:
@@ -68,7 +61,7 @@ jobs:
                 echo "Version does not have to be bumped"
               else
                 echo "Bumping patch version for ${train}/${chart}"
-                pybump bump --file ./charts/${train}/${chart}/Chart.yaml --level patch
+                ./bump.sh patch ./charts/${train}/${chart}/Chart.yaml
               fi
             done
       - name: Cleanup
diff --git a/tools/bump-major.sh b/tools/bump-major.sh
deleted file mode 100755
index 46173faec38..00000000000
--- a/tools/bump-major.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-set -eu
-
-# This script requires pyBump to be installed using pip.
-
-for train in stable incubator develop non-free deprecated; do
-  for chart in charts/${train}/*; do
-    if [ -d "${chart}" ]; then
-      echo "Bumping patch version for ${train}/${chart}"
-      pybump bump --file ${chart}/Chart.yaml --level major
-    fi
-  done
-done
diff --git a/tools/bump-minor.sh b/tools/bump-minor.sh
deleted file mode 100755
index 0a648410c54..00000000000
--- a/tools/bump-minor.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-set -eu
-
-# This script requires pyBump to be installed using pip.
-
-for train in stable incubator develop non-free deprecated; do
-  for chart in charts/${train}/*; do
-    if [ -d "${chart}" ]; then
-      echo "Bumping patch version for ${train}/${chart}"
-      pybump bump --file ${chart}/Chart.yaml --level minor
-    fi
-  done
-done
diff --git a/tools/bump-patch.sh b/tools/bump-patch.sh
deleted file mode 100755
index c353fc7bd51..00000000000
--- a/tools/bump-patch.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/usr/bin/env bash
-set -eu
-
-# This script requires pyBump to be installed using pip.
-
-for train in stable incubator develop non-free deprecated; do
-  for chart in charts/${train}/*; do
-    if [ -d "${chart}" ]; then
-      echo "Bumping patch version for ${train}/${chart}"
-      pybump bump --file ${chart}/Chart.yaml --level patch
-    fi
-  done
-done
diff --git a/tools/bump.sh b/tools/bump.sh
new file mode 100644
index 00000000000..71e9532c923
--- /dev/null
+++ b/tools/bump.sh
@@ -0,0 +1,63 @@
+#!/usr/bin/env bash
+set -eu
+
+## General file setup
+# $1 bump type
+# $2 path to chart if one chart only
+
+
+## Function details
+# $1 - semver string
+# $2 - level to incr {patch,minor,major} - patch by default
+function incr_semver() {
+    IFS='.' read -ra ver <<< "$1"
+    [[ "${#ver[@]}" -ne 3 ]] && echo "Invalid semver string" && return 1
+    [[ "$#" -eq 1 ]] && level='patch' || level=$2
+
+    patch=${ver[2]}
+    minor=${ver[1]}
+    major=${ver[0]}
+
+    case $level in
+        patch)
+            patch=$((patch+1))
+        ;;
+        minor)
+            patch=0
+            minor=$((minor+1))
+        ;;
+        major)
+            patch=0
+            minor=0
+            major=$((major+1))
+        ;;
+        *)
+            echo "Invalid level passed"
+            return 2
+    esac
+    echo "$major.$minor.$patch"
+}
+
+BUMPTYPE=${1}
+if [ -z ${2+x} ]; then
+for train in stable incubator develop non-free deprecated; do
+  for chart in charts/${train}/*; do
+    if [ -d "${chart}" ]; then
+      echo "Bumping patch version for ${train}/${chart}"
+      OLDVER=$(cat ${chart}/chart.yaml | grep "^version: ")
+      OLDVER=${OLDVER#version: }
+      NEWVER=$(incr_semver ${OLDVER} ${BUMPTYPE})
+      sed -i "s|^version:.*|version: ${NEWVER}|g" ${chart}/chart.yaml
+    fi
+  done
+done
+else
+  chart=${2}
+  if [ -d "${chart}" ]; then
+    echo "Bumping patch version for ${chart}"
+    OLDVER=$(cat ${chart}/chart.yaml | grep "^version: ")
+    OLDVER=${OLDVER#version: }
+    NEWVER=$(incr_semver ${OLDVER} ${BUMPTYPE})
+    sed -i "s|^version:.*|version: ${NEWVER}|g" ${chart}/chart.yaml
+  fi
+fi