diff --git a/source/conf.py b/source/conf.py
index 9bee510..c15ea95 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -110,9 +110,9 @@ man_pages = [
 
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3/", None),
-    "arch-defs": ("https://symbiflow.readthedocs.io/projects/arch-defs/en/latest/", None),
+    "arch-defs": ("https://f4pga.readthedocs.io/projects/arch-defs/en/latest/", None),
     "fasm": ("https://fasm.readthedocs.io/en/latest/", None),
     "prjtrellis": ("https://prjtrellis.readthedocs.io/en/latest/", None),
-    "prjxray": ("https://symbiflow.readthedocs.io/projects/prjxray/en/latest/", None),
+    "prjxray": ("https://f4pga.readthedocs.io/projects/prjxray/en/latest/", None),
     "vtr": ("https://docs.verilogtorouting.org/en/latest/", None),
 }
diff --git a/source/index.rst b/source/index.rst
index d8c4c7b..a4ded67 100644
--- a/source/index.rst
+++ b/source/index.rst
@@ -6,7 +6,7 @@ F4PGA documentation
 
    introduction
    toolchain-desc/index
-   Architecture Definitions ➚ <https://symbiflow.readthedocs.io/projects/arch-defs/en/latest/>
-   Project X-Ray ➚ <https://symbiflow.readthedocs.io/projects/prjxray/en/latest/>
+   Architecture Definitions ➚ <https://f4pga.readthedocs.io/projects/arch-defs/en/latest/>
+   Project X-Ray ➚ <https://f4pga.readthedocs.io/projects/prjxray/en/latest/>
    Project Trellis ➚ <https://prjtrellis.readthedocs.io/en/latest/>
    FPGA Assembly (FASM) ➚ <https://fasm.readthedocs.io/en/latest/>
diff --git a/source/toolchain-desc/index.rst b/source/toolchain-desc/index.rst
index 7cfa022..c79c34e 100644
--- a/source/toolchain-desc/index.rst
+++ b/source/toolchain-desc/index.rst
@@ -6,7 +6,7 @@ This section provides a description of the F4PGA toolchain as well as the basic
 .. toctree::
    :maxdepth: 3
 
-   Getting started ➚ <https://symbiflow.readthedocs.io/projects/arch-defs/en/latest/getting-started.html>
+   Getting started ➚ <https://f4pga.readthedocs.io/projects/arch-defs/en/latest/getting-started.html>
    design-flow
    yosys
    VPR ➚ <https://docs.verilogtorouting.org/en/latest/vpr/>