diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,7 @@
+# 0.1.3.1 -- 2021-08-26
+
+* Increase allowed prometheus-client version ranges.
+
 # 0.1.3.0 -- 2020-06-17
 
 * Support base-4.14 and GHC 8.10.
diff --git a/prometheus-proc.cabal b/prometheus-proc.cabal
--- a/prometheus-proc.cabal
+++ b/prometheus-proc.cabal
@@ -1,5 +1,5 @@
 name:                prometheus-proc
-version:             0.1.3.0
+version:             0.1.3.1
 synopsis:            Export metrics from /proc for the current process
 homepage:            https://github.com/fimad/prometheus-haskell
 license:             BSD3
@@ -20,7 +20,7 @@
   build-depends:       base >=4.10 && <4.15
                      , directory >= 1.2.5.0 && < 1.4
                      , filepath >=1.4 && <1.5
-                     , prometheus-client >= 1.0.0 && < 1.1
+                     , prometheus-client >= 1.0.0 && < 1.2
                      , regex-applicative >=0.3 && <0.4
                      , text >= 0.7 && < 1.3
                      , unix >=2.7 && <2.8