diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index b24ce8a24..14cdaa256 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -51,7 +51,7 @@ Copyright and Sign-Off
 ----------------------
 
 Authors retain copyright of their contributions to ARTIQ, but whenever possible
-should use the GNU GPL version 3 license for them to be merged.
+should use the GNU LGPL version 3 license for them to be merged.
 
 Works of US government employees are not copyrighted but can also be merged.
 
diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index c81baa953..0dd569e5f 100644
--- a/conda/artiq-dev/meta.yaml
+++ b/conda/artiq-dev/meta.yaml
@@ -43,5 +43,5 @@ requirements:
 
 about:
   home: https://m-labs.hk/artiq
-  license: GPL
+  license: LGPL
   summary: 'ARTIQ development metapackage'
diff --git a/conda/artiq-kc705-nist_clock/meta.yaml b/conda/artiq-kc705-nist_clock/meta.yaml
index d55b7dd4a..f6aebd686 100644
--- a/conda/artiq-kc705-nist_clock/meta.yaml
+++ b/conda/artiq-kc705-nist_clock/meta.yaml
@@ -19,5 +19,5 @@ requirements:
 
 about:
   home: https://m-labs.hk/artiq
-  license: GPL
+  license: LGPL
   summary: 'Bitstream, BIOS and runtime for NIST_CLOCK on the KC705 board'
diff --git a/conda/artiq-kc705-nist_qc2/meta.yaml b/conda/artiq-kc705-nist_qc2/meta.yaml
index 26c5b48a6..7caf0169a 100644
--- a/conda/artiq-kc705-nist_qc2/meta.yaml
+++ b/conda/artiq-kc705-nist_qc2/meta.yaml
@@ -19,5 +19,5 @@ requirements:
 
 about:
   home: https://m-labs.hk/artiq
-  license: GPL
+  license: LGPL
   summary: 'Bitstream, BIOS and runtime for NIST_QC2 on the KC705 board'
diff --git a/conda/artiq-pipistrello-nist_qc1/meta.yaml b/conda/artiq-pipistrello-nist_qc1/meta.yaml
index 3f4a13092..858d77393 100644
--- a/conda/artiq-pipistrello-nist_qc1/meta.yaml
+++ b/conda/artiq-pipistrello-nist_qc1/meta.yaml
@@ -19,5 +19,5 @@ requirements:
 
 about:
   home: http://m-labs.hk/artiq
-  license: GPL
+  license: LGPL
   summary: 'Bitstream, BIOS and runtime for NIST_QC1 on the Pipistrello board'
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index 287bce62e..17b3147f2 100644
--- a/conda/artiq/meta.yaml
+++ b/conda/artiq/meta.yaml
@@ -51,5 +51,5 @@ test:
 
 about:
   home: https://m-labs.hk/artiq
-  license: GPL
+  license: LGPL
   summary: 'ARTIQ (Advanced Real-Time Infrastructure for Quantum physics) is a next-generation control system for quantum information experiments. It is being developed in partnership with the Ion Storage Group at NIST, and its applicability reaches beyond ion trapping.'
diff --git a/doc/manual/introduction.rst b/doc/manual/introduction.rst
index 99b647935..fd086f352 100644
--- a/doc/manual/introduction.rst
+++ b/doc/manual/introduction.rst
@@ -31,4 +31,4 @@ Website: https://m-labs.hk/artiq
 
 `Cite ARTIQ <http://dx.doi.org/10.5281/zenodo.51303>`_ as ``Bourdeauducq, Sébastien et al. (2016). ARTIQ 1.0. Zenodo. 10.5281/zenodo.51303``.
 
-Copyright (C) 2014-2017 M-Labs Limited. Licensed under GNU GPL version 3.
+Copyright (C) 2014-2017 M-Labs Limited. Licensed under GNU LGPL version 3+.
diff --git a/setup.py b/setup.py
index fbd75bce5..77b310202 100755
--- a/setup.py
+++ b/setup.py
@@ -51,7 +51,7 @@ setup(
     url="https://m-labs.hk/artiq",
     description="Advanced Real-Time Infrastructure for Quantum physics",
     long_description=open("README.rst", encoding="utf-8").read(),
-    license="GPLv3+",
+    license="LGPLv3+",
     classifiers="""\
 Development Status :: 5 - Production/Stable
 Environment :: Console