diff --git a/spec-0001/index.md b/spec-0001/index.md
index e0a35887..482bcef9 100644
--- a/spec-0001/index.md
+++ b/spec-0001/index.md
@@ -10,6 +10,7 @@ author:
 endorsed-by:
   - ipython
   - networkx
+  - pysal
   - numpy
   - scikit-image
   - scikit-learn
diff --git a/spec-0004/index.md b/spec-0004/index.md
index 819384dc..cef46654 100644
--- a/spec-0004/index.md
+++ b/spec-0004/index.md
@@ -15,6 +15,7 @@ endorsed-by:
   - matplotlib
   - networkx
   - numpy
+  - pysal
   - scikit-image
   - scikit-learn
   - scipy
diff --git a/spec-0006/index.md b/spec-0006/index.md
index 7f6945b2..02f847f7 100644
--- a/spec-0006/index.md
+++ b/spec-0006/index.md
@@ -11,6 +11,7 @@ endorsed-by:
   - ipython
   - networkx
   - numpy
+  - pysal
   - scikit-image
   - scikit-learn
 ---
diff --git a/spec-0007/index.md b/spec-0007/index.md
index 65b9f4cd..ffc24c80 100644
--- a/spec-0007/index.md
+++ b/spec-0007/index.md
@@ -11,6 +11,7 @@ endorsed-by:
   - ipython
   - networkx
   - numpy
+  - pysal
   - scikit-image
   - scipy
 ---
diff --git a/spec-0008/index.md b/spec-0008/index.md
index abd12a80..ce22ea8d 100644
--- a/spec-0008/index.md
+++ b/spec-0008/index.md
@@ -12,6 +12,7 @@ author:
 endorsed-by:
   - networkx
   - numpy
+  - pysal
   - scikit-image
   - scikit-learn
 ---