diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
index 69c44d20c0..a270746022 100644
--- a/.github/CHANGELOG.md
+++ b/.github/CHANGELOG.md
@@ -6,6 +6,9 @@
 
 ### Improvements
 
+* Introduces requirements-dev.txt and improves dockerfile.
+[(#330)](https://github.com/PennyLaneAI/pennylane-lightning/pull/330)
+
 ### Documentation
 
 ### Bug fixes
@@ -14,6 +17,8 @@
 
 This release contains contributions from (in alphabetical order):
 
+Amintor Dusko
+
 ---
 
 # Release 0.25.0
diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index d1ef5ccb58..6c180e61db 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -32,9 +32,8 @@ jobs:
         run: |
           cd main
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
+          pip install -r requirements-dev.txt
           pip install matplotlib
-          pip install git+https://github.com/PennyLaneAI/pennylane.git@master
 
       - name: Install lightning.qubit device (master)
         run: |
diff --git a/.github/workflows/tests_linux.yml b/.github/workflows/tests_linux.yml
index 6c15acd483..e0030365bb 100644
--- a/.github/workflows/tests_linux.yml
+++ b/.github/workflows/tests_linux.yml
@@ -230,9 +230,7 @@ jobs:
         run: |
           cd main
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip uninstall pennylane -y
-          pip install git+https://github.com/PennyLaneAI/pennylane.git
+          pip install -r requirements-dev.txt
 
       - name: Install ML libraries for interfaces
         run: |
@@ -285,9 +283,7 @@ jobs:
         run: |
           cd main
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip uninstall pennylane -y
-          pip install git+https://github.com/PennyLaneAI/pennylane.git
+          pip install -r requirements-dev.txt
 
       - name: Install ML libraries for interfaces
         run: |
diff --git a/.github/workflows/tests_without_binary.yml b/.github/workflows/tests_without_binary.yml
index dd29bdc059..934d5072b0 100644
--- a/.github/workflows/tests_without_binary.yml
+++ b/.github/workflows/tests_without_binary.yml
@@ -36,9 +36,7 @@ jobs:
         run: |
           cd main
           python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          pip uninstall pennylane -y
-          pip install git+https://github.com/PennyLaneAI/pennylane.git
+          pip install -r requirements-dev.txt
 
       - name: Install lightning.qubit device
         run: |
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 2e67eed946..bce3b788a0 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -29,8 +29,10 @@ RUN apt-get update \
     python3-pip \
     python3-venv \
     python3-dev \
+    gcc-10 g++-10 cpp-10 \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* \
+    && update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-10 100 --slave /usr/bin/g++ g++ /usr/bin/g++-10 --slave /usr/bin/gcov gcov /usr/bin/gcov-10 \
     && /usr/sbin/update-ccache-symlinks \
     && mkdir /opt/ccache \
     && ccache --set-config=cache_dir=/opt/ccache \
@@ -44,12 +46,8 @@ WORKDIR /opt/pennylane-lightning
 COPY . .
 
 RUN pip install --no-cache-dir wheel \
-    pytest \
-    pytest-cov \
-    pytest-mock \
-    flaky \
     sphinx \
-    && pip install --no-cache-dir -r requirements.txt \
+    && pip install --no-cache-dir -r requirements-dev.txt \
     && pip uninstall -y PennyLane_Lightning \
     && make install \
     && make test-python \
diff --git a/pennylane_lightning/_version.py b/pennylane_lightning/_version.py
index 186ddf83bc..dde0b381dc 100644
--- a/pennylane_lightning/_version.py
+++ b/pennylane_lightning/_version.py
@@ -16,4 +16,4 @@
    Version number (major.minor.patch[-label])
 """
 
-__version__ = "0.26.0-dev"
+__version__ = "0.26.0-dev1"
diff --git a/requirements-dev.txt b/requirements-dev.txt
new file mode 100644
index 0000000000..08be6260f0
--- /dev/null
+++ b/requirements-dev.txt
@@ -0,0 +1,8 @@
+ninja
+flaky
+numpy
+git+https://github.com/PennyLaneAI/pennylane.git@master
+pybind11
+pytest
+pytest-cov
+pytest-mock
diff --git a/requirements.txt b/requirements.txt
index f945837dca..de0d3cba80 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 ninja
 flaky
 numpy
-pennylane>=0.15
+pennylane~=0.25
 pybind11
 pytest
 pytest-cov