diff --git a/conda/artiq-dev/meta.yaml b/conda/artiq-dev/meta.yaml
index a08765fa5..6fa20a18a 100644
--- a/conda/artiq-dev/meta.yaml
+++ b/conda/artiq-dev/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   run:
diff --git a/conda/artiq-kc705-nist_clock/meta.yaml b/conda/artiq-kc705-nist_clock/meta.yaml
index 5028ad009..e158a5623 100644
--- a/conda/artiq-kc705-nist_clock/meta.yaml
+++ b/conda/artiq-kc705-nist_clock/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   build:
diff --git a/conda/artiq-kc705-nist_qc2/meta.yaml b/conda/artiq-kc705-nist_qc2/meta.yaml
index 76032bbaa..ae7946985 100644
--- a/conda/artiq-kc705-nist_qc2/meta.yaml
+++ b/conda/artiq-kc705-nist_qc2/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   build:
diff --git a/conda/artiq-kc705-phaser/meta.yaml b/conda/artiq-kc705-phaser/meta.yaml
index 8697b88d0..c9aca8755 100644
--- a/conda/artiq-kc705-phaser/meta.yaml
+++ b/conda/artiq-kc705-phaser/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   build:
diff --git a/conda/artiq-pipistrello-demo/meta.yaml b/conda/artiq-pipistrello-demo/meta.yaml
index d2fec0824..66d02b166 100644
--- a/conda/artiq-pipistrello-demo/meta.yaml
+++ b/conda/artiq-pipistrello-demo/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   build:
diff --git a/conda/artiq/meta.yaml b/conda/artiq/meta.yaml
index 4bebcdc53..d73c90270 100644
--- a/conda/artiq/meta.yaml
+++ b/conda/artiq/meta.yaml
@@ -8,7 +8,7 @@ source:
 build:
   noarch_python: true
   number: {{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}
-  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:] }}
+  string: py_{{ environ.get("GIT_DESCRIBE_NUMBER", 0) }}+git{{ environ.get("GIT_DESCRIBE_HASH", "")[1:9] }}
 
 requirements:
   build: