diff --git a/ocrd/setup.py b/ocrd/setup.py
index a675ab4c9..929849c9f 100644
--- a/ocrd/setup.py
+++ b/ocrd/setup.py
@@ -6,7 +6,7 @@ class build(orig_build):
     def finalize_options(self):
         vers = ' == ' + self.distribution.metadata.version
         self.distribution.install_requires = [
-            req + vers if req.startswith('ocrd') else req
+            req + vers if req.startswith('ocrd') and '==' not in req else req
             for req in self.distribution.install_requires
         ]
         orig_build.finalize_options(self)
diff --git a/ocrd_modelfactory/setup.py b/ocrd_modelfactory/setup.py
index a675ab4c9..929849c9f 100644
--- a/ocrd_modelfactory/setup.py
+++ b/ocrd_modelfactory/setup.py
@@ -6,7 +6,7 @@ class build(orig_build):
     def finalize_options(self):
         vers = ' == ' + self.distribution.metadata.version
         self.distribution.install_requires = [
-            req + vers if req.startswith('ocrd') else req
+            req + vers if req.startswith('ocrd') and '==' not in req else req
             for req in self.distribution.install_requires
         ]
         orig_build.finalize_options(self)
diff --git a/ocrd_models/setup.py b/ocrd_models/setup.py
index a675ab4c9..929849c9f 100644
--- a/ocrd_models/setup.py
+++ b/ocrd_models/setup.py
@@ -6,7 +6,7 @@ class build(orig_build):
     def finalize_options(self):
         vers = ' == ' + self.distribution.metadata.version
         self.distribution.install_requires = [
-            req + vers if req.startswith('ocrd') else req
+            req + vers if req.startswith('ocrd') and '==' not in req else req
             for req in self.distribution.install_requires
         ]
         orig_build.finalize_options(self)
diff --git a/ocrd_network/setup.py b/ocrd_network/setup.py
index a675ab4c9..929849c9f 100644
--- a/ocrd_network/setup.py
+++ b/ocrd_network/setup.py
@@ -6,7 +6,7 @@ class build(orig_build):
     def finalize_options(self):
         vers = ' == ' + self.distribution.metadata.version
         self.distribution.install_requires = [
-            req + vers if req.startswith('ocrd') else req
+            req + vers if req.startswith('ocrd') and '==' not in req else req
             for req in self.distribution.install_requires
         ]
         orig_build.finalize_options(self)
diff --git a/ocrd_validators/setup.py b/ocrd_validators/setup.py
index a675ab4c9..929849c9f 100644
--- a/ocrd_validators/setup.py
+++ b/ocrd_validators/setup.py
@@ -6,7 +6,7 @@ class build(orig_build):
     def finalize_options(self):
         vers = ' == ' + self.distribution.metadata.version
         self.distribution.install_requires = [
-            req + vers if req.startswith('ocrd') else req
+            req + vers if req.startswith('ocrd') and '==' not in req else req
             for req in self.distribution.install_requires
         ]
         orig_build.finalize_options(self)