diff --git a/.github/workflows/ci_tests_legacy.yaml b/.github/workflows/ci_tests_legacy.yaml
index 47ac45f2375..7cd266b10ea 100644
--- a/.github/workflows/ci_tests_legacy.yaml
+++ b/.github/workflows/ci_tests_legacy.yaml
@@ -65,7 +65,8 @@ jobs:
       - name: Install dependencies
         run: |
           mamba install gmt=${{ matrix.gmt_version }} numpy \
-                        pandas xarray netCDF4 packaging geopandas \
+                        pandas xarray netCDF4 packaging \
+                        geopandas ipython \
                         build dvc make 'pytest>=6.0' \
                         pytest-cov pytest-doctestplus pytest-mpl sphinx-gallery
 
diff --git a/pygmt/src/coast.py b/pygmt/src/coast.py
index 5c727d61529..014c951eddc 100644
--- a/pygmt/src/coast.py
+++ b/pygmt/src/coast.py
@@ -202,6 +202,7 @@ def coast(self, **kwargs):
     ... )
     >>> # Show the plot
     >>> fig.show()
+    <IPython.core.display.Image object>
     """
     kwargs = self._preprocess(**kwargs)  # pylint: disable=protected-access
     if not args_in_kwargs(args=["C", "G", "S", "I", "N", "E", "Q", "W"], kwargs=kwargs):
diff --git a/pygmt/src/grd2cpt.py b/pygmt/src/grd2cpt.py
index c3b04e8317f..dd847a5fcbb 100644
--- a/pygmt/src/grd2cpt.py
+++ b/pygmt/src/grd2cpt.py
@@ -175,6 +175,7 @@ def grd2cpt(grid, **kwargs):
     >>> fig.grdimage(grid=grid)
     >>> # show the plot
     >>> fig.show()
+    <IPython.core.display.Image object>
     """
     if kwargs.get("W") is not None and kwargs.get("Ww") is not None:
         raise GMTInvalidInput("Set only categorical or cyclic to True, not both.")
diff --git a/pygmt/src/grdcontour.py b/pygmt/src/grdcontour.py
index 170e4cbb832..45689968f5b 100644
--- a/pygmt/src/grdcontour.py
+++ b/pygmt/src/grdcontour.py
@@ -122,6 +122,7 @@ def grdcontour(self, grid, **kwargs):
     ... )
     >>> # show the plot
     >>> fig.show()
+    <IPython.core.display.Image object>
     """
     kwargs = self._preprocess(**kwargs)  # pylint: disable=protected-access
     with Session() as lib:
diff --git a/pygmt/src/grdimage.py b/pygmt/src/grdimage.py
index fbaa3cf144a..0b88e26088f 100644
--- a/pygmt/src/grdimage.py
+++ b/pygmt/src/grdimage.py
@@ -173,6 +173,7 @@ def grdimage(self, grid, **kwargs):
     >>> fig.grdimage(grid=grid, cmap="geo", projection="W10c", frame="ag")
     >>> # show the plot
     >>> fig.show()
+    <IPython.core.display.Image object>
     """
     kwargs = self._preprocess(**kwargs)  # pylint: disable=protected-access
     with Session() as lib:
diff --git a/pygmt/src/solar.py b/pygmt/src/solar.py
index 86c6194630b..c2aa188c47f 100644
--- a/pygmt/src/solar.py
+++ b/pygmt/src/solar.py
@@ -89,6 +89,7 @@ def solar(self, terminator="d", terminator_datetime=None, **kwargs):
     ... )
     >>> # show the plot
     >>> fig.show()
+    <IPython.core.display.Image object>
     """
 
     kwargs = self._preprocess(**kwargs)  # pylint: disable=protected-access