diff --git a/requirements/dev.txt b/requirements/dev.txt
index 98dce4b..75bd884 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -1,14 +1,14 @@
-flake8==3.7.8
-flake8-blind-except==0.1.1
-flake8-builtins==1.4.1
-flake8-commas==2.0.0
-flake8-comprehensions==2.1.0
-flake8-debugger==3.1.0
-flake8-mutable==1.2.0
-flake8-print==3.1.0
-flake8-quotes==2.0.1
-flake8-tuple==0.4.0
-isort==4.3.21
-pytest==4.6.3
-pytest-console-scripts==0.1.9
-pytest-cov==2.7.1
+flake8>=3.7.8
+flake8-blind-except>=0.1.1
+flake8-builtins>=1.4.1
+flake8-commas>=2.0.0
+flake8-comprehensions>=2.1.0
+flake8-debugger>=3.1.0
+flake8-mutable>=1.2.0
+flake8-print>=3.1.0
+flake8-quotes>=2.0.1
+flake8-tuple>=0.4.0
+isort>=4.3.21
+pytest>=4.6.3
+pytest-console-scripts>=0.1.9
+pytest-cov>=2.7.1
diff --git a/requirements/prod.txt b/requirements/prod.txt
index 36d9395..d481539 100644
--- a/requirements/prod.txt
+++ b/requirements/prod.txt
@@ -1,4 +1,4 @@
-colorama==0.4.1
-GitPython==2.1.15
-pandas==0.24.2
-path.py==12.0.1
+colorama>=0.4.1
+GitPython>=2.1.15
+pandas>=0.24.2
+path.py>=12.0.1