diff --git a/pkgs/fiona/default.nix b/pkgs/fiona/default.nix
index a200ef7e..e1987529 100644
--- a/pkgs/fiona/default.nix
+++ b/pkgs/fiona/default.nix
@@ -93,6 +93,7 @@ buildPythonPackage rec {
   meta = with lib; {
     changelog = "https://github.com/Toblerity/Fiona/blob/${src.rev}/CHANGES.txt";
     description = "OGR's neat, nimble, no-nonsense API for Python";
+    mainProgram = "fio";
     homepage = "https://fiona.readthedocs.io/";
     license = licenses.bsd3;
     maintainers = teams.geospatial.members;
diff --git a/pkgs/pg_featureserv/default.nix b/pkgs/pg_featureserv/default.nix
index 7564bec7..cf0072be 100644
--- a/pkgs/pg_featureserv/default.nix
+++ b/pkgs/pg_featureserv/default.nix
@@ -37,6 +37,7 @@ buildGoModule rec {
 
   meta = with lib; {
     description = "Lightweight RESTful Geospatial Feature Server for PostGIS in Go";
+    mainProgram = "pg_featureserv";
     homepage = "https://github.com/CrunchyData/pg_featureserv";
     license = licenses.asl20;
     maintainers = teams.geospatial.members;
diff --git a/pkgs/pg_tileserv/default.nix b/pkgs/pg_tileserv/default.nix
index 1355efe4..69340e05 100644
--- a/pkgs/pg_tileserv/default.nix
+++ b/pkgs/pg_tileserv/default.nix
@@ -39,6 +39,7 @@ buildGoModule rec {
 
   meta = with lib; {
     description = "A very thin PostGIS-only tile server in Go";
+    mainProgram = "pg_tileserv";
     homepage = "https://github.com/CrunchyData/pg_tileserv";
     license = licenses.asl20;
     maintainers = teams.geospatial.members;
diff --git a/pkgs/pyproj/default.nix b/pkgs/pyproj/default.nix
index 11ec1ef4..bb98e96e 100644
--- a/pkgs/pyproj/default.nix
+++ b/pkgs/pyproj/default.nix
@@ -106,6 +106,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Python interface to PROJ library";
+    mainProgram = "pyproj";
     homepage = "https://github.com/pyproj4/pyproj";
     changelog = "https://github.com/pyproj4/pyproj/blob/${src.rev}/docs/history.rst";
     license = licenses.mit;
diff --git a/pkgs/rasterio/default.nix b/pkgs/rasterio/default.nix
index 324c6584..eef18524 100644
--- a/pkgs/rasterio/default.nix
+++ b/pkgs/rasterio/default.nix
@@ -119,6 +119,7 @@ buildPythonPackage rec {
 
   meta = with lib; {
     description = "Python package to read and write geospatial raster data";
+    mainProgram = "rio";
     homepage = "https://rasterio.readthedocs.io/";
     changelog = "https://github.com/rasterio/rasterio/blob/${version}/CHANGES.txt";
     license = licenses.bsd3;