diff --git a/ci/deps/azure-37-locale.yaml b/ci/deps/azure-37-locale.yaml
index bd8ba912d5298..05adbf0c924dc 100644
--- a/ci/deps/azure-37-locale.yaml
+++ b/ci/deps/azure-37-locale.yaml
@@ -10,6 +10,7 @@ dependencies:
   - jinja2
   - lxml
   - matplotlib
+  - moto
   - nomkl
   - numexpr
   - numpy
@@ -32,4 +33,3 @@ dependencies:
   - pip
   - pip:
     - hypothesis>=3.58.0
-    - moto  # latest moto in conda-forge fails with 3.7, move to conda dependencies when this is fixed
diff --git a/ci/deps/azure-windows-37.yaml b/ci/deps/azure-windows-37.yaml
index 43504dec26953..08208d1e2d59a 100644
--- a/ci/deps/azure-windows-37.yaml
+++ b/ci/deps/azure-windows-37.yaml
@@ -10,6 +10,7 @@ dependencies:
   - jinja2
   - lxml
   - matplotlib=2.2.*
+  - moto
   - numexpr
   - numpy=1.14.*
   - openpyxl
@@ -29,6 +30,5 @@ dependencies:
   - pytest-xdist
   - pytest-mock
   - pytest-azurepipelines
-  - moto
   - hypothesis>=3.58.0
   - pyreadstat
diff --git a/ci/deps/travis-36-cov.yaml b/ci/deps/travis-36-cov.yaml
index c497495553e8b..fead806fc8e1c 100644
--- a/ci/deps/travis-36-cov.yaml
+++ b/ci/deps/travis-36-cov.yaml
@@ -12,6 +12,7 @@ dependencies:
   - geopandas
   - html5lib
   - matplotlib
+  - moto
   - nomkl
   - numexpr
   - numpy=1.15.*
@@ -46,6 +47,5 @@ dependencies:
   - pip:
     - brotlipy
     - coverage
-    - moto
     - pandas-datareader
     - python-dateutil
diff --git a/ci/deps/travis-36-locale.yaml b/ci/deps/travis-36-locale.yaml
index 75e3348adab7c..0d9a760914dab 100644
--- a/ci/deps/travis-36-locale.yaml
+++ b/ci/deps/travis-36-locale.yaml
@@ -14,6 +14,7 @@ dependencies:
   - jinja2
   - lxml=3.8.0
   - matplotlib=3.0.*
+  - moto
   - nomkl
   - numexpr
   - numpy
@@ -36,7 +37,6 @@ dependencies:
   - pytest>=4.0.2
   - pytest-xdist
   - pytest-mock
-  - moto
   - pip
   - pip:
     - hypothesis>=3.58.0
diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index 23089cb577bf5..13e672cbc131a 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -679,7 +679,7 @@ def dtype(self):
         """
         return self._data.dtype
 
-    @cache_readonly
+    @property
     def dtype_str(self):
         """
         Return the dtype str of the underlying data.